﻿/**
* @preserve
* jquery.layout 1.3.0 - Release Candidate 30.79
* $Date: 2013-01-12 08:00:00 (Sat, 12 Jan 2013) $
* $Rev: 303007 $
*
* Copyright (c) 2012 
*   Fabrizio Balliano (http://www.fabrizioballiano.net)
*   Kevin Dalman (http://allpro.net)
*
* Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
* and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
*
* Changelog: http://layout.jquery-dev.net/changelog.cfm#1.3.0.rc30.79
*
* Docs: http://layout.jquery-dev.net/documentation.html
* Tips: http://layout.jquery-dev.net/tips.html
* Help: http://groups.google.com/group/jquery-ui-layout
*/

/* JavaDoc Info: http://code.google.com/closure/compiler/docs/js-for-compiler.html
* {!Object}	non-nullable type (never NULL)
* {?string}	nullable type (sometimes NULL) - default for {Object}
* {number=}	optional parameter
* {*}			ALL types
*/
/*	TODO for jQ 2.0 
*	change .andSelf() to .addBack()
*	$.fn.disableSelection won't work
*/

// NOTE: For best readability, view with a fixed-width font and tabs equal to 4-chars

; (function ($) {

    // alias Math methods - used a lot!
    var min = Math.min
, max = Math.max
, round = Math.floor

, isStr = function (v) { return $.type(v) === "string"; }

    /**
    * @param {!Object}			Instance
    * @param {Array.<string>}	a_fn
    */
, runPluginCallbacks = function (Instance, a_fn) {
    if ($.isArray(a_fn))
        for (var i = 0, c = a_fn.length; i < c; i++) {
            var fn = a_fn[i];
            try {
                if (isStr(fn)) // 'name' of a function
                    fn = eval(fn);
                if ($.isFunction(fn))
                    g(fn)(Instance);
            } catch (ex) { }
        }
    function g(f) { return f; }; // compiler hack
}
;

    /*
    *	GENERIC $.layout METHODS - used by all layouts
    */
    $.layout = {

        version: "1.3.rc30.79"
, revision: 0.033007 // 1.3.0 final = 1.0300 - major(n+).minor(nn)+patch(nn+)

        // $.layout.browser REPLACES $.browser
, browser: {} // set below

        // *PREDEFINED* EFFECTS & DEFAULTS 
        // MUST list effect here - OR MUST set an fxSettings option (can be an empty hash: {})
, effects: {

    //	Pane Open/Close Animations
    slide: {
        all: { duration: "fast"} // eg: duration: 1000, easing: "easeOutBounce"
		, north: { direction: "up" }
		, south: { direction: "down" }
		, east: { direction: "right" }
		, west: { direction: "left" }
    }
	, drop: {
	    all: { duration: "slow" }
		, north: { direction: "up" }
		, south: { direction: "down" }
		, east: { direction: "right" }
		, west: { direction: "left" }
	}
	, scale: {
	    all: { duration: "fast" }
	}
    //	these are not recommended, but can be used
	, blind: {}
	, clip: {}
	, explode: {}
	, fade: {}
	, fold: {}
	, puff: {}

    //	Pane Resize Animations
	, size: {
	    all: { easing: "swing" }
	}
}

        // INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
, config: {
    optionRootKeys: "effects,panes,north,south,west,east,center".split(",")
	, allPanes: "north,south,west,east,center".split(",")
	, borderPanes: "north,south,west,east".split(",")
	, oppositeEdge: {
	    north: "south"
		, south: "north"
		, east: "west"
		, west: "east"
	}
    //	offscreen data
	, offscreenCSS: { left: "-99999px", right: "auto"} // used by hide/close if useOffscreenClose=true
	, offscreenReset: "offscreenReset" // key used for data
    //	CSS used in multiple places
	, hidden: { visibility: "hidden" }
	, visible: { visibility: "visible" }
    //	layout element settings
	, resizers: {
	    cssReq: {
	        position: "absolute"
			, padding: 0
			, margin: 0
			, fontSize: "1px"
			, textAlign: "left"	// to counter-act "center" alignment!
			, overflow: "hidden" // prevent toggler-button from overflowing
	        //	SEE $.layout.defaults.zIndexes.resizer_normal
	    }
		, cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
		    background: "#DDD"
			, border: "none"
		}
	}
	, togglers: {
	    cssReq: {
	        position: "absolute"
			, display: "block"
			, padding: 0
			, margin: 0
			, overflow: "hidden"
			, textAlign: "center"
			, fontSize: "1px"
			, cursor: "pointer"
			, zIndex: 1
	    }
		, cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
		    background: "#AAA"
		}
	}
	, content: {
	    cssReq: {
	        position: "relative" /* contain floated or positioned elements */
	    }
		, cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
		    overflow: "auto"
			, padding: "10px"
		}
		, cssDemoPane: { // DEMO CSS - REMOVE scrolling from 'pane' when it has a content-div
		    overflow: "hidden"
			, padding: 0
		}
	}
	, panes: { // defaults for ALL panes - overridden by 'per-pane settings' below
	    cssReq: {
	        position: "absolute"
			, margin: 0
	        //	$.layout.defaults.zIndexes.pane_normal
	    }
		, cssDemo: { // DEMO CSS - applied if: options.PANE.applyDemoStyles=true
		    padding: "10px"
			, background: "#FFF"
			, border: "1px solid #BBB"
			, overflow: "auto"
		}
	}
	, north: {
	    side: "top"
		, sizeType: "Height"
		, dir: "horz"
		, cssReq: {
		    top: 0
			, bottom: "auto"
			, left: 0
			, right: 0
			, width: "auto"
		    //	height: 	DYNAMIC
		}
	}
	, south: {
	    side: "bottom"
		, sizeType: "Height"
		, dir: "horz"
		, cssReq: {
		    top: "auto"
			, bottom: 0
			, left: 0
			, right: 0
			, width: "auto"
		    //	height: 	DYNAMIC
		}
	}
	, east: {
	    side: "right"
		, sizeType: "Width"
		, dir: "vert"
		, cssReq: {
		    left: "auto"
			, right: 0
			, top: "auto" // DYNAMIC
			, bottom: "auto" // DYNAMIC
			, height: "auto"
		    //	width: 		DYNAMIC
		}
	}
	, west: {
	    side: "left"
		, sizeType: "Width"
		, dir: "vert"
		, cssReq: {
		    left: 0
			, right: "auto"
			, top: "auto" // DYNAMIC
			, bottom: "auto" // DYNAMIC
			, height: "auto"
		    //	width: 		DYNAMIC
		}
	}
	, center: {
	    dir: "center"
		, cssReq: {
		    left: "auto" // DYNAMIC
			, right: "auto" // DYNAMIC
			, top: "auto" // DYNAMIC
			, bottom: "auto" // DYNAMIC
			, height: "auto"
			, width: "auto"
		}
	}
}

        // CALLBACK FUNCTION NAMESPACE - used to store reusable callback functions
, callbacks: {}

, getParentPaneElem: function (el) {
    // must pass either a container or pane element
    var $el = $(el)
		, layout = $el.data("layout") || $el.data("parentLayout");
    if (layout) {
        var $cont = layout.container;
        // see if this container is directly-nested inside an outer-pane
        if ($cont.data("layoutPane")) return $cont;
        var $pane = $cont.closest("." + $.layout.defaults.panes.paneClass);
        // if a pane was found, return it
        if ($pane.data("layoutPane")) return $pane;
    }
    return null;
}

, getParentPaneInstance: function (el) {
    // must pass either a container or pane element
    var $pane = $.layout.getParentPaneElem(el);
    return $pane ? $pane.data("layoutPane") : null;
}

, getParentLayoutInstance: function (el) {
    // must pass either a container or pane element
    var $pane = $.layout.getParentPaneElem(el);
    return $pane ? $pane.data("parentLayout") : null;
}

, getEventObject: function (evt) {
    return typeof evt === "object" && evt.stopPropagation ? evt : null;
}
, parsePaneName: function (evt_or_pane) {
    var evt = $.layout.getEventObject(evt_or_pane)
		, pane = evt_or_pane;
    if (evt) {
        // ALWAYS stop propagation of events triggered in Layout!
        evt.stopPropagation();
        pane = $(this).data("layoutEdge");
    }
    if (pane && !/^(west|east|north|south|center)$/.test(pane)) {
        $.layout.msg('LAYOUT ERROR - Invalid pane-name: "' + pane + '"');
        pane = "error";
    }
    return pane;
}


        // LAYOUT-PLUGIN REGISTRATION
        // more plugins can added beyond this default list
, plugins: {
    draggable: !!$.fn.draggable // resizing
	, effects: {
	    core: !!$.effects		// animimations (specific effects tested by initOptions)
		, slide: $.effects && ($.effects.slide || ($.effects.effect && $.effects.effect.slide)) // default effect
	}
}

        //	arrays of plugin or other methods to be triggered for events in *each layout* - will be passed 'Instance'
, onCreate: []	// runs when layout is just starting to be created - right after options are set
, onLoad: []	// runs after layout container and global events init, but before initPanes is called
, onReady: []	// runs after initialization *completes* - ie, after initPanes completes successfully
, onDestroy: []	// runs after layout is destroyed
, onUnload: []	// runs after layout is destroyed OR when page unloads
, afterOpen: []	// runs after setAsOpen() completes
, afterClose: []	// runs after setAsClosed() completes

        /*
        *	GENERIC UTILITY METHODS
        */

        // calculate and return the scrollbar width, as an integer
, scrollbarWidth: function () { return window.scrollbarWidth || $.layout.getScrollbarSize('width'); }
, scrollbarHeight: function () { return window.scrollbarHeight || $.layout.getScrollbarSize('height'); }
, getScrollbarSize: function (dim) {
    var $c = $('<div style="position: absolute; top: -10000px; left: -10000px; width: 100px; height: 100px; overflow: scroll;"></div>').appendTo("body");
    var d = { width: $c.css("width") - $c[0].clientWidth, height: $c.height() - $c[0].clientHeight };
    $c.remove();
    window.scrollbarWidth = d.width;
    window.scrollbarHeight = d.height;
    return dim.match(/^(width|height)$/) ? d[dim] : d;
}


        /**
        * Returns hash container 'display' and 'visibility'
        *
        * @see	$.swap() - swaps CSS, runs callback, resets CSS
        * @param  {!Object}		$E				jQuery element
        * @param  {boolean=}	[force=false]	Run even if display != none
        * @return {!Object}						Returns current style props, if applicable
        */
, showInvisibly: function ($E, force) {
    if ($E && $E.length && (force || $E.css("display") === "none")) { // only if not *already hidden*
        var s = $E[0].style
        // save ONLY the 'style' props because that is what we must restore
			, CSS = { display: s.display || '', visibility: s.visibility || '' };
        // show element 'invisibly' so can be measured
        $E.css({ display: "block", visibility: "hidden" });
        return CSS;
    }
    return {};
}

        /**
        * Returns data for setting size of an element (container or a pane).
        *
        * @see  _create(), onWindowResize() for container, plus others for pane
        * @return JSON  Returns a hash of all dimensions: top, bottom, left, right, outerWidth, innerHeight, etc
        */
, getElementDimensions: function ($E, inset) {
    var 
    //	dimensions hash - start with current data IF passed
			d = { css: {}, inset: {} }
		, x = d.css			// CSS hash
		, i = { bottom: 0}	// TEMP insets (bottom = complier hack)
		, N = $.layout.cssNum
		, off = $E.offset()
		, b, p, ei			// TEMP border, padding
		;
    d.offsetLeft = off.left;
    d.offsetTop = off.top;

    if (!inset) inset = {}; // simplify logic below

    $.each("Left,Right,Top,Bottom".split(","), function (idx, e) { // e = edge
        b = x["border" + e] = $.layout.borderWidth($E, e);
        p = x["padding" + e] = $.layout.cssNum($E, "padding" + e);
        ei = e.toLowerCase();
        d.inset[ei] = inset[ei] >= 0 ? inset[ei] : p; // any missing insetX value = paddingX
        i[ei] = d.inset[ei] + b; // total offset of content from outer side
    });

    x.width = $E.width();
    x.height = $E.height();
    x.top = N($E, "top", true);
    x.bottom = N($E, "bottom", true);
    x.left = N($E, "left", true);
    x.right = N($E, "right", true);

    d.outerWidth = $E.outerWidth();
    d.outerHeight = $E.outerHeight();
    // calc the TRUE inner-dimensions, even in quirks-mode!
    d.innerWidth = max(0, d.outerWidth - i.left - i.right);
    d.innerHeight = max(0, d.outerHeight - i.top - i.bottom);
    // layoutWidth/Height is used in calcs for manual resizing
    // layoutW/H only differs from innerW/H when in quirks-mode - then is like outerW/H
    d.layoutWidth = $E.innerWidth();
    d.layoutHeight = $E.innerHeight();

    //if ($E.prop('tagName') === 'BODY') { debugData( d, $E.prop('tagName') ); } // DEBUG

    //d.visible	= $E.is(":visible");// && x.width > 0 && x.height > 0;

    return d;
}

, getElementStyles: function ($E, list) {
    var 
			CSS = {}
		, style = $E[0].style
		, props = list.split(",")
		, sides = "Top,Bottom,Left,Right".split(",")
		, attrs = "Color,Style,Width".split(",")
		, p, s, a, i, j, k
		;
    for (i = 0; i < props.length; i++) {
        p = props[i];
        if (p.match(/(border|padding|margin)$/))
            for (j = 0; j < 4; j++) {
                s = sides[j];
                if (p === "border")
                    for (k = 0; k < 3; k++) {
                        a = attrs[k];
                        CSS[p + s + a] = style[p + s + a];
                    }
                else
                    CSS[p + s] = style[p + s];
            }
        else
            CSS[p] = style[p];
    };
    return CSS
}

        /**
        * Return the innerWidth for the current browser/doctype
        *
        * @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
        * @param  {Array.<Object>}	$E  Must pass a jQuery object - first element is processed
        * @param  {number=}			outerWidth (optional) Can pass a width, allowing calculations BEFORE element is resized
        * @return {number}			Returns the innerWidth of the elem by subtracting padding and borders
        */
, cssWidth: function ($E, outerWidth) {
    // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
    if (outerWidth <= 0) return 0;

    var bs = !$.layout.browser.boxModel ? "border-box" : $.support.boxSizing ? $E.css("boxSizing") : "content-box"
		, b = $.layout.borderWidth
		, n = $.layout.cssNum
		, W = outerWidth
		;
    // strip border and/or padding from outerWidth to get CSS Width
    if (bs !== "border-box")
        W -= (b($E, "Left") + b($E, "Right"));
    if (bs === "content-box")
        W -= (n($E, "paddingLeft") + n($E, "paddingRight"));
    return max(0, W);
}

        /**
        * Return the innerHeight for the current browser/doctype
        *
        * @see  initPanes(), sizeMidPanes(), initHandles(), sizeHandles()
        * @param  {Array.<Object>}	$E  Must pass a jQuery object - first element is processed
        * @param  {number=}			outerHeight  (optional) Can pass a width, allowing calculations BEFORE element is resized
        * @return {number}			Returns the innerHeight of the elem by subtracting padding and borders
        */
, cssHeight: function ($E, outerHeight) {
    // a 'calculated' outerHeight can be passed so borders and/or padding are removed if needed
    if (outerHeight <= 0) return 0;

    var bs = !$.layout.browser.boxModel ? "border-box" : $.support.boxSizing ? $E.css("boxSizing") : "content-box"
		, b = $.layout.borderWidth
		, n = $.layout.cssNum
		, H = outerHeight
		;
    // strip border and/or padding from outerHeight to get CSS Height
    if (bs !== "border-box")
        H -= (b($E, "Top") + b($E, "Bottom"));
    if (bs === "content-box")
        H -= (n($E, "paddingTop") + n($E, "paddingBottom"));
    return max(0, H);
}

        /**
        * Returns the 'current CSS numeric value' for a CSS property - 0 if property does not exist
        *
        * @see  Called by many methods
        * @param {Array.<Object>}	$E					Must pass a jQuery object - first element is processed
        * @param {string}			prop				The name of the CSS property, eg: top, width, etc.
        * @param {boolean=}			[allowAuto=false]	true = return 'auto' if that is value; false = return 0
        * @return {(string|number)}						Usually used to get an integer value for position (top, left) or size (height, width)
        */
, cssNum: function ($E, prop, allowAuto) {
    if (!$E.jquery) $E = $($E);
    var CSS = $.layout.showInvisibly($E)
		, p = $.css($E[0], prop, true)
		, v = allowAuto && p == "auto" ? p : Math.round(parseFloat(p) || 0);
    $E.css(CSS); // RESET
    return v;
}

, borderWidth: function (el, side) {
    if (el.jquery) el = el[0];
    var b = "border" + side.substr(0, 1).toUpperCase() + side.substr(1); // left => Left
    return $.css(el, b + "Style", true) === "none" ? 0 : Math.round(parseFloat($.css(el, b + "Width", true)) || 0);
}

        /**
        * Mouse-tracking utility - FUTURE REFERENCE
        *
        * init: if (!window.mouse) {
        *			window.mouse = { x: 0, y: 0 };
        *			$(document).mousemove( $.layout.trackMouse );
        *		}
        *
        * @param {Object}		evt
        *
        ,	trackMouse: function (evt) {
        window.mouse = { x: evt.clientX, y: evt.clientY };
        }
        */

        /**
        * SUBROUTINE for preventPrematureSlideClose option
        *
        * @param {Object}		evt
        * @param {Object=}		el
        */
, isMouseOverElem: function (evt, el) {
    var 
			$E = $(el || this)
		, d = $E.offset()
		, T = d.top
		, L = d.left
		, R = L + $E.outerWidth()
		, B = T + $E.outerHeight()
		, x = evt.pageX	// evt.clientX ?
		, y = evt.pageY	// evt.clientY ?
		;
    // if X & Y are < 0, probably means is over an open SELECT
    return ($.layout.browser.msie && x < 0 && y < 0) || ((x >= L && x <= R) && (y >= T && y <= B));
}

        /**
        * Message/Logging Utility
        *
        * @example $.layout.msg("My message");				// log text
        * @example $.layout.msg("My message", true);		// alert text
        * @example $.layout.msg({ foo: "bar" }, "Title");	// log hash-data, with custom title
        * @example $.layout.msg({ foo: "bar" }, true, "Title", { sort: false }); -OR-
        * @example $.layout.msg({ foo: "bar" }, "Title", { sort: false, display: true }); // alert hash-data
        *
        * @param {(Object|string)}			info			String message OR Hash/Array
        * @param {(Boolean|string|Object)=}	[popup=false]	True means alert-box - can be skipped
        * @param {(Object|string)=}			[debugTitle=""]	Title for Hash data - can be skipped
        * @param {Object=}					[debugOpts]		Extra options for debug output
        */
, msg: function (info, popup, debugTitle, debugOpts) {
    if ($.isPlainObject(info) && window.debugData) {
        if (typeof popup === "string") {
            debugOpts = debugTitle;
            debugTitle = popup;
        }
        else if (typeof debugTitle === "object") {
            debugOpts = debugTitle;
            debugTitle = null;
        }
        var t = debugTitle || "log( <object> )"
			, o = $.extend({ sort: false, returnHTML: false, display: false }, debugOpts);
        if (popup === true || o.display)
            debugData(info, t, o);
        else if (window.console)
            console.log(debugData(info, t, o));
    }
    else if (popup)
        alert(info);
    else if (window.console)
        console.log(info);
    else {
        var id = "#layoutLogger"
			, $l = $(id);
        if (!$l.length)
            $l = createLog();
        $l.children("ul").append('<li style="padding: 4px 10px; margin: 0; border-top: 1px solid #CCC;">' + info.replace(/\</g, "&lt;").replace(/\>/g, "&gt;") + '</li>');
    }

    function createLog() {
        var pos = $.support.fixedPosition ? 'fixed' : 'absolute'
			, $e = $('<div id="layoutLogger" style="position: ' + pos + '; top: 5px; z-index: 999999; max-width: 25%; overflow: hidden; border: 1px solid #000; border-radius: 5px; background: #FBFBFB; box-shadow: 0 2px 10px rgba(0,0,0,0.3);">'
				+ '<div style="font-size: 13px; font-weight: bold; padding: 5px 10px; background: #F6F6F6; border-radius: 5px 5px 0 0; cursor: move;">'
				+ '<span style="float: right; padding-left: 7px; cursor: pointer;" title="Remove Console" onclick="$(this).closest(\'#layoutLogger\').remove()">X</span>Layout console.log</div>'
				+ '<ul style="font-size: 13px; font-weight: none; list-style: none; margin: 0; padding: 0 0 2px;"></ul>'
				+ '</div>'
				).appendTo("body");
        $e.css('left', $(window).width() - $e.outerWidth() - 5)
        if ($.ui.draggable) $e.draggable({ handle: ':first-child' });
        return $e;
    };
}

    };


    /*
    *	$.layout.browser REPLACES removed $.browser, with extra data
    *	Parsing code here adapted from jQuery 1.8 $.browse
    */
    var u = navigator.userAgent.toLowerCase()
, m = /(chrome)[ \/]([\w.]+)/.exec(u)
	|| /(webkit)[ \/]([\w.]+)/.exec(u)
	|| /(opera)(?:.*version|)[ \/]([\w.]+)/.exec(u)
	|| /(msie) ([\w.]+)/.exec(u)
	|| u.indexOf("compatible") < 0 && /(mozilla)(?:.*? rv:([\w.]+)|)/.exec(u)
	|| []
, b = m[1] || ""
, v = m[2] || 0
, ie = b === "msie"
;
    $.layout.browser = {
        version: v
, safari: b === "webkit"	// webkit (NOT chrome) = safari
, webkit: b === "chrome"	// chrome = webkit
, msie: ie
, isIE6: ie && v == 6
        // ONLY IE reverts to old box-model - update for older jQ onReady
, boxModel: !ie || $.support.boxModel !== false
    };
    if (b) $.layout.browser[b] = true; // set CURRENT browser
    /*	OLD versions of jQuery only set $.support.boxModel after page is loaded
    *	so if this is IE, use support.boxModel to test for quirks-mode (ONLY IE changes boxModel) */
    if (ie) $(function () { $.layout.browser.boxModel = $.support.boxModel; });


    // DEFAULT OPTIONS
    $.layout.defaults = {
        /*
        *	LAYOUT & LAYOUT-CONTAINER OPTIONS
        *	- none of these options are applicable to individual panes
        */
        name: ""			// Not required, but useful for buttons and used for the state-cookie
, containerClass: "ui-layout-container" // layout-container element
, inset: null		// custom container-inset values (override padding)
, scrollToBookmarkOnLoad: true		// after creating a layout, scroll to bookmark in URL (.../page.htm#myBookmark)
, resizeWithWindow: true		// bind thisLayout.resizeAll() to the window.resize event
, resizeWithWindowDelay: 200			// delay calling resizeAll because makes window resizing very jerky
, resizeWithWindowMaxDelay: 0			// 0 = none - force resize every XX ms while window is being resized
, maskPanesEarly: false		// true = create pane-masks on resizer.mouseDown instead of waiting for resizer.dragstart
, onresizeall_start: null		// CALLBACK when resizeAll() STARTS	- NOT pane-specific
, onresizeall_end: null		// CALLBACK when resizeAll() ENDS	- NOT pane-specific
, onload_start: null		// CALLBACK when Layout inits - after options initialized, but before elements
, onload_end: null		// CALLBACK when Layout inits - after EVERYTHING has been initialized
, onunload_start: null		// CALLBACK when Layout is destroyed OR onWindowUnload
, onunload_end: null		// CALLBACK when Layout is destroyed OR onWindowUnload
, initPanes: true		// false = DO NOT initialize the panes onLoad - will init later
, showErrorMessages: true		// enables fatal error messages to warn developers of common errors
, showDebugMessages: false		// display console-and-alert debug msgs - IF this Layout version _has_ debugging code!
        //	Changing this zIndex value will cause other zIndex values to automatically change
, zIndex: null		// the PANE zIndex - resizers and masks will be +1
        //	DO NOT CHANGE the zIndex values below unless you clearly understand their relationships
, zIndexes: {								// set _default_ z-index values here...
    pane_normal: 0			// normal z-index for panes
	, content_mask: 1			// applied to overlays used to mask content INSIDE panes during resizing
	, resizer_normal: 2			// normal z-index for resizer-bars
	, pane_sliding: 100			// applied to *BOTH* the pane and its resizer when a pane is 'slid open'
	, pane_animate: 1000		// applied to the pane when being animated - not applied to the resizer
	, resizer_drag: 10000		// applied to the CLONED resizer-bar when being 'dragged'
}
, errors: {
    pane: "pane"		// description of "layout pane element" - used only in error messages
	, selector: "selector"	// description of "jQuery-selector" - used only in error messages
	, addButtonError: "Error Adding Button\nInvalid "
	, containerMissing: "UI Layout Initialization Error\nThe specified layout-container does not exist."
	, centerPaneMissing: "UI Layout Initialization Error\nThe center-pane element does not exist.\nThe center-pane is a required element."
	, noContainerHeight: "UI Layout Initialization Warning\nThe layout-container \"CONTAINER\" has no height.\nTherefore the layout is 0-height and hence 'invisible'!"
	, callbackError: "UI Layout Callback Error\nThe EVENT callback is not a valid function."
}
        /*
        *	PANE DEFAULT SETTINGS
        *	- settings under the 'panes' key become the default settings for *all panes*
        *	- ALL pane-options can also be set specifically for each panes, which will override these 'default values'
        */
, panes: { // default options for 'all panes' - will be overridden by 'per-pane settings'
    applyDemoStyles: false		// NOTE: renamed from applyDefaultStyles for clarity
	, closable: true		// pane can open & close
	, resizable: true		// when open, pane can be resized 
	, slidable: true		// when closed, pane can 'slide open' over other panes - closes on mouse-out
	, initClosed: false		// true = init pane as 'closed'
	, initHidden: false 		// true = init pane as 'hidden' - no resizer-bar/spacing
    //	SELECTORS
    //,	paneSelector:			""			// MUST be pane-specific - jQuery selector for pane
	, contentSelector: ".ui-layout-content" // INNER div/element to auto-size so only it scrolls, not the entire pane!
	, contentIgnoreSelector: ".ui-layout-ignore"	// element(s) to 'ignore' when measuring 'content'
	, findNestedContent: false		// true = $P.find(contentSelector), false = $P.children(contentSelector)
    //	GENERIC ROOT-CLASSES - for auto-generated classNames
	, paneClass: "ui-layout-pane"	// Layout Pane
	, resizerClass: "ui-layout-resizer"	// Resizer Bar
	, togglerClass: "ui-layout-toggler"	// Toggler Button
	, buttonClass: "ui-layout-button"	// CUSTOM Buttons	- eg: '[ui-layout-button]-toggle/-open/-close/-pin'
    //	ELEMENT SIZE & SPACING
    //,	size:					100			// MUST be pane-specific -initial size of pane
	, minSize: 0			// when manually resizing a pane
	, maxSize: 0			// ditto, 0 = no limit
	, spacing_open: 6			// space between pane and adjacent panes - when pane is 'open'
	, spacing_closed: 6			// ditto - when pane is 'closed'
	, togglerLength_open: 50			// Length = WIDTH of toggler button on north/south sides - HEIGHT on east/west sides
	, togglerLength_closed: 50			// 100% OR -1 means 'full height/width of resizer bar' - 0 means 'hidden'
	, togglerAlign_open: "center"	// top/left, bottom/right, center, OR...
	, togglerAlign_closed: "center"	// 1 => nn = offset from top/left, -1 => -nn == offset from bottom/right
	, togglerContent_open: ""			// text or HTML to put INSIDE the toggler
	, togglerContent_closed: ""			// ditto
    //	RESIZING OPTIONS
	, resizerDblClickToggle: true		// 
	, autoResize: true		// IF size is 'auto' or a percentage, then recalc 'pixel size' whenever the layout resizes
	, autoReopen: true		// IF a pane was auto-closed due to noRoom, reopen it when there is room? False = leave it closed
	, resizerDragOpacity: 1			// option for ui.draggable
    //,	resizerCursor:			""			// MUST be pane-specific - cursor when over resizer-bar
	, maskContents: false		// true = add DIV-mask over-or-inside this pane so can 'drag' over IFRAMES
	, maskObjects: false		// true = add IFRAME-mask over-or-inside this pane to cover objects/applets - content-mask will overlay this mask
	, maskZindex: null		// will override zIndexes.content_mask if specified - not applicable to iframe-panes
	, resizingGrid: false		// grid size that the resizers will snap-to during resizing, eg: [20,20]
	, livePaneResizing: false		// true = LIVE Resizing as resizer is dragged
	, liveContentResizing: false		// true = re-measure header/footer heights as resizer is dragged
	, liveResizingTolerance: 1			// how many px change before pane resizes, to control performance
    //	SLIDING OPTIONS
	, sliderCursor: "pointer"	// cursor when resizer-bar will trigger 'sliding'
	, slideTrigger_open: "click"		// click, dblclick, mouseenter
	, slideTrigger_close: "mouseleave"// click, mouseleave
	, slideDelay_open: 300			// applies only for mouseenter event - 0 = instant open
	, slideDelay_close: 300			// applies only for mouseleave event (300ms is the minimum!)
	, hideTogglerOnSlide: false		// when pane is slid-open, should the toggler show?
	, preventQuickSlideClose: $.layout.browser.webkit // Chrome triggers slideClosed as it is opening
	, preventPrematureSlideClose: false	// handle incorrect mouseleave trigger, like when over a SELECT-list in IE
    //	PANE-SPECIFIC TIPS & MESSAGES
	, tips: {
	    Open: "Open"		// eg: "Open Pane"
		, Close: "Close"
		, Resize: "Resize"
		, Slide: "Slide Open"
		, Pin: "Pin"
		, Unpin: "Un-Pin"
		, noRoomToOpen: "Not enough room to show this panel."	// alert if user tries to open a pane that cannot
		, minSizeWarning: "Panel has reached its minimum size"	// displays in browser statusbar
		, maxSizeWarning: "Panel has reached its maximum size"	// ditto
	}
    //	HOT-KEYS & MISC
	, showOverflowOnHover: false		// will bind allowOverflow() utility to pane.onMouseOver
	, enableCursorHotkey: true		// enabled 'cursor' hotkeys
    //,	customHotkey:			""			// MUST be pane-specific - EITHER a charCode OR a character
	, customHotkeyModifier: "SHIFT"		// either 'SHIFT', 'CTRL' or 'CTRL+SHIFT' - NOT 'ALT'
    //	PANE ANIMATION
    //	NOTE: fxSss_open, fxSss_close & fxSss_size options (eg: fxName_open) are auto-generated if not passed
	, fxName: "slide" 	// ('none' or blank), slide, drop, scale -- only relevant to 'open' & 'close', NOT 'size'
	, fxSpeed: null		// slow, normal, fast, 200, nnn - if passed, will OVERRIDE fxSettings.duration
	, fxSettings: {}			// can be passed, eg: { easing: "easeOutBounce", duration: 1500 }
	, fxOpacityFix: true		// tries to fix opacity in IE to restore anti-aliasing after animation
	, animatePaneSizing: false		// true = animate resizing after dragging resizer-bar OR sizePane() is called
    /*  NOTE: Action-specific FX options are auto-generated from the options above if not specifically set:
    fxName_open:			"slide"		// 'Open' pane animation
    fnName_close:			"slide"		// 'Close' pane animation
    fxName_size:			"slide"		// 'Size' pane animation - when animatePaneSizing = true
    fxSpeed_open:			null
    fxSpeed_close:			null
    fxSpeed_size:			null
    fxSettings_open:		{}
    fxSettings_close:		{}
    fxSettings_size:		{}
    */
    //	CHILD/NESTED LAYOUTS
	, children: null		// Layout-options for nested/child layout - even {} is valid as options
	, containerSelector: ''			// if child is NOT 'directly nested', a selector to find it/them (can have more than one child layout!)
	, initChildren: true		// true = child layout will be created as soon as _this_ layout completes initialization
	, destroyChildren: true		// true = destroy child-layout if this pane is destroyed
	, resizeChildren: true		// true = trigger child-layout.resizeAll() when this pane is resized
    //	EVENT TRIGGERING
	, triggerEventsOnLoad: false		// true = trigger onopen OR onclose callbacks when layout initializes
	, triggerEventsDuringLiveResize: true	// true = trigger onresize callback REPEATEDLY if livePaneResizing==true
    //	PANE CALLBACKS
	, onshow_start: null		// CALLBACK when pane STARTS to Show	- BEFORE onopen/onhide_start
	, onshow_end: null		// CALLBACK when pane ENDS being Shown	- AFTER  onopen/onhide_end
	, onhide_start: null		// CALLBACK when pane STARTS to Close	- BEFORE onclose_start
	, onhide_end: null		// CALLBACK when pane ENDS being Closed	- AFTER  onclose_end
	, onopen_start: null		// CALLBACK when pane STARTS to Open
	, onopen_end: null		// CALLBACK when pane ENDS being Opened
	, onclose_start: null		// CALLBACK when pane STARTS to Close
	, onclose_end: null		// CALLBACK when pane ENDS being Closed
	, onresize_start: null		// CALLBACK when pane STARTS being Resized ***FOR ANY REASON***
	, onresize_end: null		// CALLBACK when pane ENDS being Resized ***FOR ANY REASON***
	, onsizecontent_start: null		// CALLBACK when sizing of content-element STARTS
	, onsizecontent_end: null		// CALLBACK when sizing of content-element ENDS
	, onswap_start: null		// CALLBACK when pane STARTS to Swap
	, onswap_end: null		// CALLBACK when pane ENDS being Swapped
	, ondrag_start: null		// CALLBACK when pane STARTS being ***MANUALLY*** Resized
	, ondrag_end: null		// CALLBACK when pane ENDS being ***MANUALLY*** Resized
}
        /*
        *	PANE-SPECIFIC SETTINGS
        *	- options listed below MUST be specified per-pane - they CANNOT be set under 'panes'
        *	- all options under the 'panes' key can also be set specifically for any pane
        *	- most options under the 'panes' key apply only to 'border-panes' - NOT the the center-pane
        */
, north: {
    paneSelector: ".ui-layout-north"
	, size: "auto"		// eg: "auto", "30%", .30, 200
	, resizerCursor: "n-resize"	// custom = url(myCursor.cur)
	, customHotkey: ""			// EITHER a charCode (43) OR a character ("o")
}
, south: {
    paneSelector: ".ui-layout-south"
	, size: "auto"
	, resizerCursor: "s-resize"
	, customHotkey: ""
}
, east: {
    paneSelector: ".ui-layout-east"
	, size: 200
	, resizerCursor: "e-resize"
	, customHotkey: ""
}
, west: {
    paneSelector: ".ui-layout-west"
	, size: 200
	, resizerCursor: "w-resize"
	, customHotkey: ""
}
, center: {
    paneSelector: ".ui-layout-center"
	, minWidth: 0
	, minHeight: 0
}
    };

    $.layout.optionsMap = {
        // layout/global options - NOT pane-options
        layout: ("name,instanceKey,stateManagement,effects,inset,zIndexes,errors,"
	+ "zIndex,scrollToBookmarkOnLoad,showErrorMessages,maskPanesEarly,"
	+ "outset,resizeWithWindow,resizeWithWindowDelay,resizeWithWindowMaxDelay,"
	+ "onresizeall,onresizeall_start,onresizeall_end,onload,onload_start,onload_end,onunload,onunload_start,onunload_end").split(",")
        //	borderPanes: [ ALL options that are NOT specified as 'layout' ]
        // default.panes options that apply to the center-pane (most options apply _only_ to border-panes)
, center: ("paneClass,contentSelector,contentIgnoreSelector,findNestedContent,applyDemoStyles,triggerEventsOnLoad,"
	+ "showOverflowOnHover,maskContents,maskObjects,liveContentResizing,"
	+ "containerSelector,children,initChildren,resizeChildren,destroyChildren,"
	+ "onresize,onresize_start,onresize_end,onsizecontent,onsizecontent_start,onsizecontent_end").split(",")
        // options that MUST be specifically set 'per-pane' - CANNOT set in the panes (defaults) key
, noDefault: ("paneSelector,resizerCursor,customHotkey").split(",")
    };

    /**
    * Processes options passed in converts flat-format data into subkey (JSON) format
    * In flat-format, subkeys are _currently_ separated with 2 underscores, like north__optName
    * Plugins may also call this method so they can transform their own data
    *
    * @param  {!Object}	hash			Data/options passed by user - may be a single level or nested levels
    * @param  {boolean=}	[addKeys=false]	Should the primary layout.options keys be added if they do not exist?
    * @return {Object}						Returns hash of minWidth & minHeight
    */
    $.layout.transformData = function (hash, addKeys) {
        var json = addKeys ? { panes: {}, center: {}} : {} // init return object
	, branch, optKey, keys, key, val, i, c;

        if (typeof hash !== "object") return json; // no options passed

        // convert all 'flat-keys' to 'sub-key' format
        for (optKey in hash) {
            branch = json;
            val = hash[optKey];
            keys = optKey.split("__"); // eg: west__size or north__fxSettings__duration
            c = keys.length - 1;
            // convert underscore-delimited to subkeys
            for (i = 0; i <= c; i++) {
                key = keys[i];
                if (i === c) {	// last key = value
                    if ($.isPlainObject(val))
                        branch[key] = $.layout.transformData(val); // RECURSE
                    else
                        branch[key] = val;
                }
                else {
                    if (!branch[key])
                        branch[key] = {}; // create the subkey
                    // recurse to sub-key for next loop - if not done
                    branch = branch[key];
                }
            }
        }
        return json;
    };

    // INTERNAL CONFIG DATA - DO NOT CHANGE THIS!
    $.layout.backwardCompatibility = {
        // data used by renameOldOptions()
        map: {
            //	OLD Option Name:			NEW Option Name
            applyDefaultStyles: "applyDemoStyles"
            //	CHILD/NESTED LAYOUTS
	, childOptions: "children"
	, initChildLayout: "initChildren"
	, destroyChildLayout: "destroyChildren"
	, resizeChildLayout: "resizeChildren"
	, resizeNestedLayout: "resizeChildren"
            //	MISC Options
	, resizeWhileDragging: "livePaneResizing"
	, resizeContentWhileDragging: "liveContentResizing"
	, triggerEventsWhileDragging: "triggerEventsDuringLiveResize"
	, maskIframesOnResize: "maskContents"
            //	STATE MANAGEMENT
	, useStateCookie: "stateManagement.enabled"
	, "cookie.autoLoad": "stateManagement.autoLoad"
	, "cookie.autoSave": "stateManagement.autoSave"
	, "cookie.keys": "stateManagement.stateKeys"
	, "cookie.name": "stateManagement.cookie.name"
	, "cookie.domain": "stateManagement.cookie.domain"
	, "cookie.path": "stateManagement.cookie.path"
	, "cookie.expires": "stateManagement.cookie.expires"
	, "cookie.secure": "stateManagement.cookie.secure"
            //	OLD Language options
	, noRoomToOpenTip: "tips.noRoomToOpen"
	, togglerTip_open: "tips.Close"	// open   = Close
	, togglerTip_closed: "tips.Open"		// closed = Open
	, resizerTip: "tips.Resize"
	, sliderTip: "tips.Slide"
        }

        /**
        * @param {Object}	opts
        */
, renameOptions: function (opts) {
    var map = $.layout.backwardCompatibility.map
		, oldData, newData, value
		;
    for (var itemPath in map) {
        oldData = getBranch(itemPath);
        value = oldData.branch[oldData.key];
        if (value !== undefined) {
            newData = getBranch(map[itemPath], true);
            newData.branch[newData.key] = value;
            delete oldData.branch[oldData.key];
        }
    }

    /**
    * @param {string}	path
    * @param {boolean=}	[create=false]	Create path if does not exist
    */
    function getBranch(path, create) {
        var a = path.split(".") // split keys into array
			, c = a.length - 1
			, D = { branch: opts, key: a[c]} // init branch at top & set key (last item)
			, i = 0, k, undef;
        for (; i < c; i++) { // skip the last key (data)
            k = a[i];
            if (D.branch[k] == undefined) { // child-key does not exist
                if (create) {
                    D.branch = D.branch[k] = {}; // create child-branch
                }
                else // can't go any farther
                    D.branch = {}; // branch is undefined
            }
            else
                D.branch = D.branch[k]; // get child-branch
        }
        return D;
    };
}

        /**
        * @param {Object}	opts
        */
, renameAllOptions: function (opts) {
    var ren = $.layout.backwardCompatibility.renameOptions;
    // rename root (layout) options
    ren(opts);
    // rename 'defaults' to 'panes'
    if (opts.defaults) {
        if (typeof opts.panes !== "object")
            opts.panes = {};
        $.extend(true, opts.panes, opts.defaults);
        delete opts.defaults;
    }
    // rename options in the the options.panes key
    if (opts.panes) ren(opts.panes);
    // rename options inside *each pane key*, eg: options.west
    $.each($.layout.config.allPanes, function (i, pane) {
        if (opts[pane]) ren(opts[pane]);
    });
    return opts;
}
    };




    /*	============================================================
    *	BEGIN WIDGET: $( selector ).layout( {options} );
    *	============================================================
    */
    $.fn.layout = function (opts) {
        var 

        // local aliases to global data
	browser = $.layout.browser
, _c = $.layout.config

        // local aliases to utlity methods
, cssW = $.layout.cssWidth
, cssH = $.layout.cssHeight
, elDims = $.layout.getElementDimensions
, styles = $.layout.getElementStyles
, evtObj = $.layout.getEventObject
, evtPane = $.layout.parsePaneName

        /**
        * options - populated by initOptions()
        */
, options = $.extend(true, {}, $.layout.defaults)
, effects = options.effects = $.extend(true, {}, $.layout.effects)

        /**
        * layout-state object
        */
, state = {
    // generate unique ID to use for event.namespace so can unbind only events added by 'this layout'
    id: "layout" + $.now()	// code uses alias: sID
	, initialized: false
	, paneResizing: false
	, panesSliding: {}
	, container: { 	// list all keys referenced in code to avoid compiler error msgs
	    innerWidth: 0
		, innerHeight: 0
		, outerWidth: 0
		, outerHeight: 0
		, layoutWidth: 0
		, layoutHeight: 0
	}
	, north: { childIdx: 0 }
	, south: { childIdx: 0 }
	, east: { childIdx: 0 }
	, west: { childIdx: 0 }
	, center: { childIdx: 0 }
}

        /**
        * parent/child-layout pointers
        */
        //,	hasParentLayout	= false	- exists ONLY inside Instance so can be set externally
, children = {
    north: null
	, south: null
	, east: null
	, west: null
	, center: null
}

        /*
        * ###########################
        *  INTERNAL HELPER FUNCTIONS
        * ###########################
        */

        /**
        * Manages all internal timers
        */
, timer = {
    data: {}
	, set: function (s, fn, ms) { timer.clear(s); timer.data[s] = setTimeout(fn, ms); }
	, clear: function (s) { var t = timer.data; if (t[s]) { clearTimeout(t[s]); delete t[s]; } }
}

        /**
        * Alert or console.log a message - IF option is enabled.
        *
        * @param {(string|!Object)}	msg				Message (or debug-data) to display
        * @param {boolean=}			[popup=false]	True by default, means 'alert', false means use console.log
        * @param {boolean=}			[debug=false]	True means is a widget debugging message
        */
, _log = function (msg, popup, debug) {
    var o = options;
    if ((o.showErrorMessages && !debug) || (debug && o.showDebugMessages))
        $.layout.msg(o.name + ' / ' + msg, (popup !== false));
    return false;
}

        /**
        * Executes a Callback function after a trigger event, like resize, open or close
        *
        * @param {string}				evtName					Name of the layout callback, eg "onresize_start"
        * @param {(string|boolean)=}	[pane=""]				This is passed only so we can pass the 'pane object' to the callback
        * @param {(string|boolean)=}	[skipBoundEvents=false]	True = do not run events bound to the elements - only the callbacks set in options
        */
, _runCallbacks = function (evtName, pane, skipBoundEvents) {
    var hasPane = pane && isStr(pane)
		, s = hasPane ? state[pane] : state
		, o = hasPane ? options[pane] : options
		, lName = options.name
    // names like onopen and onopen_end separate are interchangeable in options...
		, lng = evtName + (evtName.match(/_/) ? "" : "_end")
		, shrt = lng.match(/_end$/) ? lng.substr(0, lng.length - 4) : ""
		, fn = o[lng] || o[shrt]
		, retVal = "NC" // NC = No Callback
		, args = []
		, $P
		;
    if (!hasPane && $.type(pane) === 'boolean') {
        skipBoundEvents = pane; // allow pane param to be skipped for Layout callback
        pane = "";
    }

    // first trigger the callback set in the options
    if (fn) {
        try {
            // convert function name (string) to function object
            if (isStr(fn)) {
                if (fn.match(/,/)) {
                    // function name cannot contain a comma, 
                    // so must be a function name AND a parameter to pass
                    args = fn.split(",")
						, fn = eval(args[0]);
                }
                else // just the name of an external function?
                    fn = eval(fn);
            }
            // execute the callback, if exists
            if ($.isFunction(fn)) {
                if (args.length)
                    retVal = g(fn)(args[1]); // pass the argument parsed from 'list'
                else if (hasPane)
                // pass data: pane-name, pane-element, pane-state, pane-options, and layout-name
                    retVal = g(fn)(pane, $Ps[pane], s, o, lName);
                else // must be a layout/container callback - pass suitable info
                    retVal = g(fn)(Instance, s, o, lName);
            }
        }
        catch (ex) {
            _log(options.errors.callbackError.replace(/EVENT/, $.trim((pane || "") + " " + lng)), false);
            if ($.type(ex) === 'string' && string.length)
                _log('Exception:  ' + ex, false);
        }
    }

    // trigger additional events bound directly to the pane
    if (!skipBoundEvents && retVal !== false) {
        if (hasPane) { // PANE events can be bound to each pane-elements
            $P = $Ps[pane];
            o = options[pane];
            s = state[pane];
            $P.triggerHandler('layoutpane' + lng, [pane, $P, s, o, lName]);
            if (shrt)
                $P.triggerHandler('layoutpane' + shrt, [pane, $P, s, o, lName]);
        }
        else { // LAYOUT events can be bound to the container-element
            $N.triggerHandler('layout' + lng, [Instance, s, o, lName]);
            if (shrt)
                $N.triggerHandler('layout' + shrt, [Instance, s, o, lName]);
        }
    }

    // ALWAYS resizeChildren after an onresize_end event - even during initialization
    // IGNORE onsizecontent_end event because causes child-layouts to resize TWICE
    if (hasPane && evtName === "onresize_end") // BAD: || evtName === "onsizecontent_end"
        resizeChildren(pane + "", true); // compiler hack -force string

    return retVal;

    function g(f) { return f; }; // compiler hack
}


        /**
        * cure iframe display issues in IE & other browsers
        */
, _fixIframe = function (pane) {
    if (browser.mozilla) return; // skip FireFox - it auto-refreshes iframes onShow
    var $P = $Ps[pane];
    // if the 'pane' is an iframe, do it
    if (state[pane].tagName === "IFRAME")
        $P.css(_c.hidden).css(_c.visible);
    else // ditto for any iframes INSIDE the pane
        $P.find('IFRAME').css(_c.hidden).css(_c.visible);
}

        /**
        * @param  {string}		pane		Can accept ONLY a 'pane' (east, west, etc)
        * @param  {number=}		outerSize	(optional) Can pass a width, allowing calculations BEFORE element is resized
        * @return {number}		Returns the innerHeight/Width of el by subtracting padding and borders
        */
, cssSize = function (pane, outerSize) {
    var fn = _c[pane].dir == "horz" ? cssH : cssW;
    return fn($Ps[pane], outerSize);
}

        /**
        * @param  {string}		pane		Can accept ONLY a 'pane' (east, west, etc)
        * @return {Object}		Returns hash of minWidth & minHeight
        */
, cssMinDims = function (pane) {
    // minWidth/Height means CSS width/height = 1px
    var $P = $Ps[pane]
		, dir = _c[pane].dir
		, d = {
		    minWidth: 1001 - cssW($P, 1000)
			, minHeight: 1001 - cssH($P, 1000)
		}
		;
    if (dir === "horz") d.minSize = d.minHeight;
    if (dir === "vert") d.minSize = d.minWidth;
    return d;
}

        // TODO: see if these methods can be made more useful...
        // TODO: *maybe* return cssW/H from these so caller can use this info

        /**
        * @param {(string|!Object)}		el
        * @param {number=}				outerWidth
        * @param {boolean=}				[autoHide=false]
        */
, setOuterWidth = function (el, outerWidth, autoHide) {
    var $E = el, w;
    if (isStr(el)) $E = $Ps[el]; // west
    else if (!el.jquery) $E = $(el);
    w = cssW($E, outerWidth);
    $E.css({ width: w });
    if (w > 0) {
        if (autoHide && $E.data('autoHidden') && $E.innerHeight() > 0) {
            $E.show().data('autoHidden', false);
            if (!browser.mozilla) // FireFox refreshes iframes - IE does not
            // make hidden, then visible to 'refresh' display after animation
                $E.css(_c.hidden).css(_c.visible);
        }
    }
    else if (autoHide && !$E.data('autoHidden'))
        $E.hide().data('autoHidden', true);
}

        /**
        * @param {(string|!Object)}		el
        * @param {number=}				outerHeight
        * @param {boolean=}				[autoHide=false]
        */
, setOuterHeight = function (el, outerHeight, autoHide) {
    var $E = el, h;
    if (isStr(el)) $E = $Ps[el]; // west
    else if (!el.jquery) $E = $(el);
    h = cssH($E, outerHeight);
    $E.css({ height: h, visibility: "visible" }); // may have been 'hidden' by sizeContent
    if (h > 0 && $E.innerWidth() > 0) {
        if (autoHide && $E.data('autoHidden')) {
            $E.show().data('autoHidden', false);
            if (!browser.mozilla) // FireFox refreshes iframes - IE does not
                $E.css(_c.hidden).css(_c.visible);
        }
    }
    else if (autoHide && !$E.data('autoHidden'))
        $E.hide().data('autoHidden', true);
}


        /**
        * Converts any 'size' params to a pixel/integer size, if not already
        * If 'auto' or a decimal/percentage is passed as 'size', a pixel-size is calculated
        *
        /**
        * @param  {string}				pane
        * @param  {(string|number)=}	size
        * @param  {string=}				[dir]
        * @return {number}
        */
, _parseSize = function (pane, size, dir) {
    if (!dir) dir = _c[pane].dir;

    if (isStr(size) && size.match(/%/))
        size = (size === '100%') ? -1 : parseInt(size, 10) / 100; // convert % to decimal

    if (size === 0)
        return 0;
    else if (size >= 1)
        return parseInt(size, 10);

    var o = options, avail = 0;
    if (dir == "horz") // north or south or center.minHeight
        avail = sC.innerHeight - ($Ps.north ? o.north.spacing_open : 0) - ($Ps.south ? o.south.spacing_open : 0);
    else if (dir == "vert") // east or west or center.minWidth
        avail = sC.innerWidth - ($Ps.west ? o.west.spacing_open : 0) - ($Ps.east ? o.east.spacing_open : 0);

    if (size === -1) // -1 == 100%
        return avail;
    else if (size > 0) // percentage, eg: .25
        return round(avail * size);
    else if (pane == "center")
        return 0;
    else { // size < 0 || size=='auto' || size==Missing || size==Invalid
        // auto-size the pane
        var dim = (dir === "horz" ? "height" : "width")
			, $P = $Ps[pane]
			, $C = dim === 'height' ? $Cs[pane] : false
			, vis = $.layout.showInvisibly($P) // show pane invisibly if hidden
			, szP = $P.css(dim) // SAVE current pane size
			, szC = $C ? $C.css(dim) : 0 // SAVE current content size
			;
        $P.css(dim, "auto");
        if ($C) $C.css(dim, "auto");
        size = (dim === "height") ? $P.outerHeight() : $P.outerWidth(); // MEASURE
        $P.css(dim, szP).css(vis); // RESET size & visibility
        if ($C) $C.css(dim, szC);
        return size;
    }
}

        /**
        * Calculates current 'size' (outer-width or outer-height) of a border-pane - optionally with 'pane-spacing' added
        *
        * @param  {(string|!Object)}	pane
        * @param  {boolean=}			[inclSpace=false]
        * @return {number}				Returns EITHER Width for east/west panes OR Height for north/south panes
        */
, getPaneSize = function (pane, inclSpace) {
    var 
			$P = $Ps[pane]
		, o = options[pane]
		, s = state[pane]
		, oSp = (inclSpace ? o.spacing_open : 0)
		, cSp = (inclSpace ? o.spacing_closed : 0)
		;
    if (!$P || s.isHidden)
        return 0;
    else if (s.isClosed || (s.isSliding && inclSpace))
        return cSp;
    else if (_c[pane].dir === "horz")
        return $P.outerHeight() + oSp;
    else // dir === "vert"
        return $P.outerWidth() + oSp;
}

        /**
        * Calculate min/max pane dimensions and limits for resizing
        *
        * @param  {string}		pane
        * @param  {boolean=}	[slide=false]
        */
, setSizeLimits = function (pane, slide) {
    if (!isInitialized()) return;
    var 
			o = options[pane]
		, s = state[pane]
		, c = _c[pane]
		, dir = c.dir
		, type = c.sizeType.toLowerCase()
		, isSliding = (slide != undefined ? slide : s.isSliding) // only open() passes 'slide' param
		, $P = $Ps[pane]
		, paneSpacing = o.spacing_open
    //	measure the pane on the *opposite side* from this pane
		, altPane = _c.oppositeEdge[pane]
		, altS = state[altPane]
		, $altP = $Ps[altPane]
		, altPaneSize = (!$altP || altS.isVisible === false || altS.isSliding ? 0 : (dir == "horz" ? $altP.outerHeight() : $altP.outerWidth()))
		, altPaneSpacing = ((!$altP || altS.isHidden ? 0 : options[altPane][altS.isClosed !== false ? "spacing_closed" : "spacing_open"]) || 0)
    //	limitSize prevents this pane from 'overlapping' opposite pane
		, containerSize = (dir == "horz" ? sC.innerHeight : sC.innerWidth)
		, minCenterDims = cssMinDims("center")
		, minCenterSize = dir == "horz" ? max(options.center.minHeight, minCenterDims.minHeight) : max(options.center.minWidth, minCenterDims.minWidth)
    //	if pane is 'sliding', then ignore center and alt-pane sizes - because 'overlays' them
		, limitSize = (containerSize - paneSpacing - (isSliding ? 0 : (_parseSize("center", minCenterSize, dir) + altPaneSize + altPaneSpacing)))
		, minSize = s.minSize = max(_parseSize(pane, o.minSize), cssMinDims(pane).minSize)
		, maxSize = s.maxSize = min((o.maxSize ? _parseSize(pane, o.maxSize) : 100000), limitSize)
		, r = s.resizerPosition = {} // used to set resizing limits
		, top = sC.inset.top
		, left = sC.inset.left
		, W = sC.innerWidth
		, H = sC.innerHeight
		, rW = o.spacing_open // subtract resizer-width to get top/left position for south/east
		;
    switch (pane) {
        case "north": r.min = top + minSize;
            r.max = top + maxSize;
            break;
        case "west": r.min = left + minSize;
            r.max = left + maxSize;
            break;
        case "south": r.min = top + H - maxSize - rW;
            r.max = top + H - minSize - rW;
            break;
        case "east": r.min = left + W - maxSize - rW;
            r.max = left + W - minSize - rW;
            break;
    };
}

        /**
        * Returns data for setting the size/position of center pane. Also used to set Height for east/west panes
        *
        * @return JSON  Returns a hash of all dimensions: top, bottom, left, right, (outer) width and (outer) height
        */
, calcNewCenterPaneDims = function () {
    var d = {
        top: getPaneSize("north", true) // true = include 'spacing' value for pane
		, bottom: getPaneSize("south", true)
		, left: getPaneSize("west", true)
		, right: getPaneSize("east", true)
		, width: 0
		, height: 0
    };

    // NOTE: sC = state.container
    // calc center-pane outer dimensions
    d.width = sC.innerWidth - d.left - d.right;  // outerWidth
    d.height = sC.innerHeight - d.bottom - d.top; // outerHeight
    // add the 'container border/padding' to get final positions relative to the container
    d.top += sC.inset.top;
    d.bottom += sC.inset.bottom;
    d.left += sC.inset.left;
    d.right += sC.inset.right;

    return d;
}


        /**
        * @param {!Object}		el
        * @param {boolean=}		[allStates=false]
        */
, getHoverClasses = function (el, allStates) {
    var 
			$El = $(el)
		, type = $El.data("layoutRole")
		, pane = $El.data("layoutEdge")
		, o = options[pane]
		, root = o[type + "Class"]
		, _pane = "-" + pane // eg: "-west"
		, _open = "-open"
		, _closed = "-closed"
		, _slide = "-sliding"
		, _hover = "-hover " // NOTE the trailing space
		, _state = $El.hasClass(root + _closed) ? _closed : _open
		, _alt = _state === _closed ? _open : _closed
		, classes = (root + _hover) + (root + _pane + _hover) + (root + _state + _hover) + (root + _pane + _state + _hover)
		;
    if (allStates) // when 'removing' classes, also remove alternate-state classes
        classes += (root + _alt + _hover) + (root + _pane + _alt + _hover);

    if (type == "resizer" && $El.hasClass(root + _slide))
        classes += (root + _slide + _hover) + (root + _pane + _slide + _hover);

    return $.trim(classes);
}
, addHover = function (evt, el) {
    var $E = $(el || this);
    if (evt && $E.data("layoutRole") === "toggler")
        evt.stopPropagation(); // prevent triggering 'slide' on Resizer-bar
    $E.addClass(getHoverClasses($E));
}
, removeHover = function (evt, el) {
    var $E = $(el || this);
    $E.removeClass(getHoverClasses($E, true));
}

, onResizerEnter = function (evt) { // ALSO called by toggler.mouseenter
    var pane = $(this).data("layoutEdge")
		, s = state[pane]
		;
    // ignore closed-panes and mouse moving back & forth over resizer!
    // also ignore if ANY pane is currently resizing
    if (s.isClosed || s.isResizing || state.paneResizing) return;

    if ($.fn.disableSelection)
        $("body").disableSelection();
    if (options.maskPanesEarly)
        showMasks(pane, { resizing: true });
}
, onResizerLeave = function (evt, el) {
    var e = el || this // el is only passed when called by the timer
		, pane = $(e).data("layoutEdge")
		, name = pane + "ResizerLeave"
		;
    timer.clear(pane + "_openSlider"); // cancel slideOpen timer, if set
    timer.clear(name); // cancel enableSelection timer - may re/set below
    // this method calls itself on a timer because it needs to allow
    // enough time for dragging to kick-in and set the isResizing flag
    // dragging has a 100ms delay set, so this delay must be >100
    if (!el) // 1st call - mouseleave event
        timer.set(name, function () { onResizerLeave(evt, e); }, 200);
    // if user is resizing, then dragStop will enableSelection(), so can skip it here
    else if (!state.paneResizing) { // 2nd call - by timer
        if ($.fn.enableSelection)
            $("body").enableSelection();
        if (options.maskPanesEarly)
            hideMasks();
    }
}

        /*
        * ###########################
        *   INITIALIZATION METHODS
        * ###########################
        */

        /**
        * Initialize the layout - called automatically whenever an instance of layout is created
        *
        * @see  none - triggered onInit
        * @return  mixed	true = fully initialized | false = panes not initialized (yet) | 'cancel' = abort
        */
, _create = function () {
    // initialize config/options
    initOptions();
    var o = options
		, s = state;

    // TEMP state so isInitialized returns true during init process
    s.creatingLayout = true;

    // init plugins for this layout, if there are any (eg: stateManagement)
    runPluginCallbacks(Instance, $.layout.onCreate);

    // options & state have been initialized, so now run beforeLoad callback
    // onload will CANCEL layout creation if it returns false
    if (false === _runCallbacks("onload_start"))
        return 'cancel';

    // initialize the container element
    _initContainer();

    // bind hotkey function - keyDown - if required
    initHotkeys();

    // bind window.onunload
    $(window).bind("unload." + sID, unload);

    // init plugins for this layout, if there are any (eg: customButtons)
    runPluginCallbacks(Instance, $.layout.onLoad);

    // if layout elements are hidden, then layout WILL NOT complete initialization!
    // initLayoutElements will set initialized=true and run the onload callback IF successful
    if (o.initPanes) _initLayoutElements();

    delete s.creatingLayout;

    return state.initialized;
}

        /**
        * Initialize the layout IF not already
        *
        * @see  All methods in Instance run this test
        * @return  boolean	true = layoutElements have been initialized | false = panes are not initialized (yet)
        */
, isInitialized = function () {
    if (state.initialized || state.creatingLayout) return true; // already initialized
    else return _initLayoutElements(); // try to init panes NOW
}

        /**
        * Initialize the layout - called automatically whenever an instance of layout is created
        *
        * @see  _create() & isInitialized
        * @param {boolean=}		[retry=false]	// indicates this is a 2nd try
        * @return  An object pointer to the instance created
        */
, _initLayoutElements = function (retry) {
    // initialize config/options
    var o = options;
    // CANNOT init panes inside a hidden container!
    if (!$N.is(":visible")) {
        // handle Chrome bug where popup window 'has no height'
        // if layout is BODY element, try again in 50ms
        // SEE: http://layout.jquery-dev.net/samples/test_popup_window.html
        if (!retry && browser.webkit && $N[0].tagName === "BODY")
            setTimeout(function () { _initLayoutElements(true); }, 50);
        return false;
    }

    // a center pane is required, so make sure it exists
    if (!getPane("center").length) {
        return _log(o.errors.centerPaneMissing);
    }

    // TEMP state so isInitialized returns true during init process
    state.creatingLayout = true;

    // update Container dims
    $.extend(sC, elDims($N, o.inset)); // passing inset means DO NOT include insetX values

    // initialize all layout elements
    initPanes(); // size & position panes - calls initHandles() - which calls initResizable()

    if (o.scrollToBookmarkOnLoad) {
        var l = self.location;
        if (l.hash) l.replace(l.hash); // scrollTo Bookmark
    }

    // check to see if this layout 'nested' inside a pane
    if (Instance.hasParentLayout)
        o.resizeWithWindow = false;
    // bind resizeAll() for 'this layout instance' to window.resize event
    else if (o.resizeWithWindow)
        $(window).bind("resize." + sID, windowResize);

    delete state.creatingLayout;
    state.initialized = true;

    // init plugins for this layout, if there are any
    runPluginCallbacks(Instance, $.layout.onReady);

    // now run the onload callback, if exists
    _runCallbacks("onload_end");

    return true; // elements initialized successfully
}

        /**
        * Initialize nested layouts for a specific pane - can optionally pass layout-options
        *
        * @param {(string|Object)}	evt_or_pane	The pane being opened, ie: north, south, east, or west
        * @param {Object=}			[opts]		Layout-options - if passed, will OVERRRIDE options[pane].children
        * @return  An object pointer to the layout instance created - or null
        */
, createChildren = function (evt_or_pane, opts) {
    var pane = evtPane.call(this, evt_or_pane)
		, $P = $Ps[pane]
		;
    if (!$P) return;
    var $C = $Cs[pane]
		, s = state[pane]
		, o = options[pane]
		, sm = options.stateManagement || {}
		, cos = opts ? (o.children = opts) : o.children
		;
    if ($.isPlainObject(cos))
        cos = [cos]; // convert a hash to a 1-elem array
    else if (!cos || !$.isArray(cos))
        return;

    $.each(cos, function (idx, co) {
        if (!$.isPlainObject(co)) return;

        // determine which element is supposed to be the 'child container'
        // if pane has a 'containerSelector' OR a 'content-div', use those instead of the pane
        var $containers = co.containerSelector ? $P.find(co.containerSelector) : ($C || $P);

        $containers.each(function () {
            var $cont = $(this)
				, child = $cont.data("layout") //	see if a child-layout ALREADY exists on this element
				;
            // if no layout exists, but children are set, try to create the layout now
            if (!child) {
                // TODO: see about moving this to the stateManagement plugin, as a method
                // set a unique child-instance key for this layout, if not already set
                setInstanceKey({ container: $cont, options: co }, s);
                // If THIS layout has a hash in stateManagement.autoLoad,
                // then see if it also contains state-data for this child-layout
                // If so, copy the stateData to child.options.stateManagement.autoLoad
                if (sm.includeChildren && state.stateData[pane]) {
                    //	THIS layout's state was cached when its state was loaded
                    var paneChildren = state.stateData[pane].children || {}
						, childState = paneChildren[co.instanceKey]
						, co_sm = co.stateManagement || (co.stateManagement = { autoLoad: true })
						;
                    // COPY the stateData into the autoLoad key
                    if (co_sm.autoLoad === true && childState) {
                        co_sm.autoSave = false; // disable autoSave because saving handled by parent-layout
                        co_sm.includeChildren = true;  // cascade option - FOR NOW
                        co_sm.autoLoad = $.extend(true, {}, childState); // COPY the state-hash
                    }
                }

                // create the layout
                child = $cont.layout(co);

                // if successful, update data
                if (child) {
                    // add the child and update all layout-pointers
                    // MAY have already been done by child-layout calling parent.refreshChildren()
                    refreshChildren(pane, child);
                }
            }
        });
    });
}

, setInstanceKey = function (child, parentPaneState) {
    // create a named key for use in state and instance branches
    var $c = child.container
		, o = child.options
		, sm = o.stateManagement
		, key = o.instanceKey || $c.data("layoutInstanceKey")
		;
    if (!key) key = (sm && sm.cookie ? sm.cookie.name : '') || o.name; // look for a name/key
    if (!key) key = "layout" + (++parentPaneState.childIdx); // if no name/key found, generate one
    else key = key.replace(/[^\w-]/gi, '_').replace(/_{2,}/g, '_');  // ensure is valid as a hash key
    o.instanceKey = key;
    $c.data("layoutInstanceKey", key); // useful if layout is destroyed and then recreated
    return key;
}

        /**
        * @param {string}		pane		The pane being opened, ie: north, south, east, or west
        * @param {Object=}		newChild	New child-layout Instance to add to this pane
        */
, refreshChildren = function (pane, newChild) {
    var $P = $Ps[pane]
		, pC = children[pane]
		, s = state[pane]
		, o
		;
    // check for destroy()ed layouts and update the child pointers & arrays
    if ($.isPlainObject(pC)) {
        $.each(pC, function (key, child) {
            if (child.destroyed) delete pC[key]
        });
        // if no more children, remove the children hash
        if ($.isEmptyObject(pC))
            pC = children[pane] = null; // clear children hash
    }

    // see if there is a directly-nested layout inside this pane
    // if there is, then there can be only ONE child-layout, so check that...
    if (!newChild && !pC) {
        newChild = $P.data("layout");
    }

    // if a newChild instance was passed, add it to children[pane]
    if (newChild) {
        // update child.state
        newChild.hasParentLayout = true; // set parent-flag in child
        // instanceKey is a key-name used in both state and children
        o = newChild.options;
        // set a unique child-instance key for this layout, if not already set
        setInstanceKey(newChild, s);
        // add pointer to pane.children hash
        if (!pC) pC = children[pane] = {}; // create an empty children hash
        pC[o.instanceKey] = newChild.container.data("layout"); // add childLayout instance
    }

    // ALWAYS refresh the pane.children alias, even if null
    Instance[pane].children = children[pane];

    // if newChild was NOT passed - see if there is a child layout NOW
    if (!newChild) {
        createChildren(pane); // MAY create a child and re-call this method
    }
}

, windowResize = function () {
    var o = options
		, delay = Number(o.resizeWithWindowDelay);
    if (delay < 10) delay = 100; // MUST have a delay!
    // resizing uses a delay-loop because the resize event fires repeatly - except in FF, but delay anyway
    timer.clear("winResize"); // if already running
    timer.set("winResize", function () {
        timer.clear("winResize");
        timer.clear("winResizeRepeater");
        var dims = elDims($N, o.inset);
        // only trigger resizeAll() if container has changed size
        if (dims.innerWidth !== sC.innerWidth || dims.innerHeight !== sC.innerHeight)
            resizeAll();
    }, delay);
    // ALSO set fixed-delay timer, if not already running
    if (!timer.data["winResizeRepeater"]) setWindowResizeRepeater();
}

, setWindowResizeRepeater = function () {
    var delay = Number(options.resizeWithWindowMaxDelay);
    if (delay > 0)
        timer.set("winResizeRepeater", function () { setWindowResizeRepeater(); resizeAll(); }, delay);
}

, unload = function () {
    var o = options;

    _runCallbacks("onunload_start");

    // trigger plugin callabacks for this layout (eg: stateManagement)
    runPluginCallbacks(Instance, $.layout.onUnload);

    _runCallbacks("onunload_end");
}

        /**
        * Validate and initialize container CSS and events
        *
        * @see  _create()
        */
, _initContainer = function () {
    var 
			N = $N[0]
		, $H = $("html")
		, tag = sC.tagName = N.tagName
		, id = sC.id = N.id
		, cls = sC.className = N.className
		, o = options
		, name = o.name
		, props = "position,margin,padding,border"
		, css = "layoutCSS"
		, CSS = {}
		, hid = "hidden" // used A LOT!
    //	see if this container is a 'pane' inside an outer-layout
		, parent = $N.data("parentLayout")	// parent-layout Instance
		, pane = $N.data("layoutEdge")		// pane-name in parent-layout
		, isChild = parent && pane
		, num = $.layout.cssNum
		, $parent, n
		;
    // sC = state.container
    sC.selector = $N.selector.split(".slice")[0];
    sC.ref = (o.name ? o.name + ' layout / ' : '') + tag + (id ? "#" + id : cls ? '.[' + cls + ']' : ''); // used in messages
    sC.isBody = (tag === "BODY");

    // try to find a parent-layout
    if (!isChild && !sC.isBody) {
        $parent = $N.closest("." + $.layout.defaults.panes.paneClass);
        parent = $parent.data("parentLayout");
        pane = $parent.data("layoutEdge");
        isChild = parent && pane;
    }

    $N.data({
        layout: Instance
			, layoutContainer: sID // FLAG to indicate this is a layout-container - contains unique internal ID
    })
			.addClass(o.containerClass)
		;
    var layoutMethods = {
        destroy: ''
		, initPanes: ''
		, resizeAll: 'resizeAll'
		, resize: 'resizeAll'
    };
    // loop hash and bind all methods - include layoutID namespacing
    for (name in layoutMethods) {
        $N.bind("layout" + name.toLowerCase() + "." + sID, Instance[layoutMethods[name] || name]);
    }

    // if this container is another layout's 'pane', then set child/parent pointers
    if (isChild) {
        // update parent flag
        Instance.hasParentLayout = true;
        // set pointers to THIS child-layout (Instance) in parent-layout
        parent.refreshChildren(pane, Instance);
    }

    // SAVE original container CSS for use in destroy()
    if (!$N.data(css)) {
        // handle props like overflow different for BODY & HTML - has 'system default' values
        if (sC.isBody) {
            // SAVE <BODY> CSS
            $N.data(css, $.extend(styles($N, props), {
                height: $N.css("height")
				, overflow: $N.css("overflow")
				, overflowX: $N.css("overflowX")
				, overflowY: $N.css("overflowY")
            }));
            // ALSO SAVE <HTML> CSS
            $H.data(css, $.extend(styles($H, 'padding'), {
                height: "auto" // FF would return a fixed px-size!
				, overflow: $H.css("overflow")
				, overflowX: $H.css("overflowX")
				, overflowY: $H.css("overflowY")
            }));
        }
        else // handle props normally for non-body elements
            $N.data(css, styles($N, props + ",top,bottom,left,right,width,height,overflow,overflowX,overflowY"));
    }

    try {
        // common container CSS
        CSS = {
            overflow: hid
			, overflowX: hid
			, overflowY: hid
        };
        $N.css(CSS);

        if (o.inset && !$.isPlainObject(o.inset)) {
            // can specify a single number for equal outset all-around
            n = parseInt(o.inset, 10) || 0
            o.inset = {
                top: n
				, bottom: n
				, left: n
				, right: n
            };
        }

        // format html & body if this is a full page layout
        if (sC.isBody) {
            // if HTML has padding, use this as an outer-spacing around BODY
            if (!o.outset) {
                // use padding from parent-elem (HTML) as outset
                o.outset = {
                    top: num($H, "paddingTop")
					, bottom: num($H, "paddingBottom")
					, left: num($H, "paddingLeft")
					, right: num($H, "paddingRight")
                };
            }
            else if (!$.isPlainObject(o.outset)) {
                // can specify a single number for equal outset all-around
                n = parseInt(o.outset, 10) || 0
                o.outset = {
                    top: n
					, bottom: n
					, left: n
					, right: n
                };
            }
            // HTML
            $H.css(CSS).css({
                height: "100%"
				, border: "none"	// no border or padding allowed when using height = 100%
				, padding: 0		// ditto
				, margin: 0
            });
            // BODY
            if (browser.isIE6) {
                // IE6 CANNOT use the trick of setting absolute positioning on all 4 sides - must have 'height'
                $N.css({
                    width: "100%"
					, height: "100%"
					, border: "none"	// no border or padding allowed when using height = 100%
					, padding: 0		// ditto
					, margin: 0
					, position: "relative"
                });
                // convert body padding to an inset option - the border cannot be measured in IE6!
                if (!o.inset) o.inset = elDims($N).inset;
            }
            else { // use absolute positioning for BODY to allow borders & padding without overflow
                $N.css({
                    width: "auto"
					, height: "auto"
					, margin: 0
					, position: "absolute"	// allows for border and padding on BODY
                });
                // apply edge-positioning created above
                $N.css(o.outset);
            }
            // set current layout-container dimensions
            $.extend(sC, elDims($N, o.inset)); // passing inset means DO NOT include insetX values
        }
        else {
            // container MUST have 'position'
            var p = $N.css("position");
            if (!p || !p.match(/(fixed|absolute|relative)/))
                $N.css("position", "relative");

            // set current layout-container dimensions
            if ($N.is(":visible")) {
                $.extend(sC, elDims($N, o.inset)); // passing inset means DO NOT change insetX (padding) values
                if (sC.innerHeight < 1) // container has no 'height' - warn developer
                    _log(o.errors.noContainerHeight.replace(/CONTAINER/, sC.ref));
            }
        }

        // if container has min-width/height, then enable scrollbar(s)
        if (num($N, "minWidth")) $N.parent().css("overflowX", "auto");
        if (num($N, "minHeight")) $N.parent().css("overflowY", "auto");

    } catch (ex) { }
}

        /**
        * Bind layout hotkeys - if options enabled
        *
        * @see  _create() and addPane()
        * @param {string=}	[panes=""]	The edge(s) to process
        */
, initHotkeys = function (panes) {
    panes = panes ? panes.split(",") : _c.borderPanes;
    // bind keyDown to capture hotkeys, if option enabled for ANY pane
    $.each(panes, function (i, pane) {
        var o = options[pane];
        if (o.enableCursorHotkey || o.customHotkey) {
            $(document).bind("keydown." + sID, keyDown); // only need to bind this ONCE
            return false; // BREAK - binding was done
        }
    });
}

        /**
        * Build final OPTIONS data
        *
        * @see  _create()
        */
, initOptions = function () {
    var data, d, pane, key, val, i, c, o;

    // reprocess user's layout-options to have correct options sub-key structure
    opts = $.layout.transformData(opts, true); // panes = default subkey

    // auto-rename old options for backward compatibility
    opts = $.layout.backwardCompatibility.renameAllOptions(opts);

    // if user-options has 'panes' key (pane-defaults), clean it...
    if (!$.isEmptyObject(opts.panes)) {
        // REMOVE any pane-defaults that MUST be set per-pane
        data = $.layout.optionsMap.noDefault;
        for (i = 0, c = data.length; i < c; i++) {
            key = data[i];
            delete opts.panes[key]; // OK if does not exist
        }
        // REMOVE any layout-options specified under opts.panes
        data = $.layout.optionsMap.layout;
        for (i = 0, c = data.length; i < c; i++) {
            key = data[i];
            delete opts.panes[key]; // OK if does not exist
        }
    }

    // MOVE any NON-layout-options from opts-root to opts.panes
    data = $.layout.optionsMap.layout;
    var rootKeys = $.layout.config.optionRootKeys;
    for (key in opts) {
        val = opts[key];
        if ($.inArray(key, rootKeys) < 0 && $.inArray(key, data) < 0) {
            if (!opts.panes[key])
                opts.panes[key] = $.isPlainObject(val) ? $.extend(true, {}, val) : val;
            delete opts[key]
        }
    }

    // START by updating ALL options from opts
    $.extend(true, options, opts);

    // CREATE final options (and config) for EACH pane
    $.each(_c.allPanes, function (i, pane) {

        // apply 'pane-defaults' to CONFIG.[PANE]
        _c[pane] = $.extend(true, {}, _c.panes, _c[pane]);

        d = options.panes;
        o = options[pane];

        // center-pane uses SOME keys in defaults.panes branch
        if (pane === 'center') {
            // ONLY copy keys from opts.panes listed in: $.layout.optionsMap.center
            data = $.layout.optionsMap.center; 	// list of 'center-pane keys'
            for (i = 0, c = data.length; i < c; i++) {	// loop the list...
                key = data[i];
                // only need to use pane-default if pane-specific value not set
                if (!opts.center[key] && (opts.panes[key] || !o[key]))
                    o[key] = d[key]; // pane-default
            }
        }
        else {
            // border-panes use ALL keys in defaults.panes branch
            o = options[pane] = $.extend(true, {}, d, o); // re-apply pane-specific opts AFTER pane-defaults
            createFxOptions(pane);
            // ensure all border-pane-specific base-classes exist
            if (!o.resizerClass) o.resizerClass = "ui-layout-resizer";
            if (!o.togglerClass) o.togglerClass = "ui-layout-toggler";
        }
        // ensure we have base pane-class (ALL panes)
        if (!o.paneClass) o.paneClass = "ui-layout-pane";
    });

    // update options.zIndexes if a zIndex-option specified
    var zo = opts.zIndex
		, z = options.zIndexes;
    if (zo > 0) {
        z.pane_normal = zo;
        z.content_mask = max(zo + 1, z.content_mask); // MIN = +1
        z.resizer_normal = max(zo + 2, z.resizer_normal); // MIN = +2
    }

    // DELETE 'panes' key now that we are done - values were copied to EACH pane
    delete options.panes;


    function createFxOptions(pane) {
        var o = options[pane]
			, d = options.panes;
        // ensure fxSettings key to avoid errors
        if (!o.fxSettings) o.fxSettings = {};
        if (!d.fxSettings) d.fxSettings = {};

        $.each(["_open", "_close", "_size"], function (i, n) {
            var 
					sName = "fxName" + n
				, sSpeed = "fxSpeed" + n
				, sSettings = "fxSettings" + n
            // recalculate fxName according to specificity rules
				, fxName = o[sName] =
						o[sName]	// options.west.fxName_open
					|| d[sName]	// options.panes.fxName_open
					|| o.fxName	// options.west.fxName
					|| d.fxName	// options.panes.fxName
					|| "none"		// MEANS $.layout.defaults.panes.fxName == "" || false || null || 0
				, fxExists = $.effects && ($.effects[fxName] || ($.effects.effect && $.effects.effect[fxName]))
				;
            // validate fxName to ensure is valid effect - MUST have effect-config data in options.effects
            if (fxName === "none" || !options.effects[fxName] || !fxExists)
                fxName = o[sName] = "none"; // effect not loaded OR unrecognized fxName

            // set vars for effects subkeys to simplify logic
            var fx = options.effects[fxName] || {}	// effects.slide
				, fx_all = fx.all || null				// effects.slide.all
				, fx_pane = fx[pane] || null				// effects.slide.west
				;
            // create fxSpeed[_open|_close|_size]
            o[sSpeed] =
					o[sSpeed]				// options.west.fxSpeed_open
				|| d[sSpeed]				// options.west.fxSpeed_open
				|| o.fxSpeed				// options.west.fxSpeed
				|| d.fxSpeed				// options.panes.fxSpeed
				|| null					// DEFAULT - let fxSetting.duration control speed
				;
            // create fxSettings[_open|_close|_size]
            o[sSettings] = $.extend(
					true
				, {}
				, fx_all					// effects.slide.all
				, fx_pane					// effects.slide.west
				, d.fxSettings			// options.panes.fxSettings
				, o.fxSettings			// options.west.fxSettings
				, d[sSettings]			// options.panes.fxSettings_open
				, o[sSettings]			// options.west.fxSettings_open
				);
        });

        // DONE creating action-specific-settings for this pane,
        // so DELETE generic options - are no longer meaningful
        delete o.fxName;
        delete o.fxSpeed;
        delete o.fxSettings;
    }
}

        /**
        * Initialize module objects, styling, size and position for all panes
        *
        * @see  _initElements()
        * @param {string}	pane		The pane to process
        */
, getPane = function (pane) {
    var sel = options[pane].paneSelector
    if (sel.substr(0, 1) === "#") // ID selector
    // NOTE: elements selected 'by ID' DO NOT have to be 'children'
        return $N.find(sel).eq(0);
    else { // class or other selector
        var $P = $N.children(sel).eq(0);
        // look for the pane nested inside a 'form' element
        return $P.length ? $P : $N.children("form:first").children(sel).eq(0);
    }
}

        /**
        * @param {Object=}		evt
        */
, initPanes = function (evt) {
    // stopPropagation if called by trigger("layoutinitpanes") - use evtPane utility 
    evtPane(evt);

    // NOTE: do north & south FIRST so we can measure their height - do center LAST
    $.each(_c.allPanes, function (idx, pane) {
        addPane(pane, true);
    });

    // init the pane-handles NOW in case we have to hide or close the pane below
    initHandles();

    // now that all panes have been initialized and initially-sized,
    // make sure there is really enough space available for each pane
    $.each(_c.borderPanes, function (i, pane) {
        if ($Ps[pane] && state[pane].isVisible) { // pane is OPEN
            setSizeLimits(pane);
            makePaneFit(pane); // pane may be Closed, Hidden or Resized by makePaneFit()
        }
    });
    // size center-pane AGAIN in case we 'closed' a border-pane in loop above
    sizeMidPanes("center");

    //	Chrome/Webkit sometimes fires callbacks BEFORE it completes resizing!
    //	Before RC30.3, there was a 10ms delay here, but that caused layout 
    //	to load asynchrously, which is BAD, so try skipping delay for now

    // process pane contents and callbacks, and init/resize child-layout if exists
    $.each(_c.allPanes, function (idx, pane) {
        afterInitPane(pane);
    });
}

        /**
        * Add a pane to the layout - subroutine of initPanes()
        *
        * @see  initPanes()
        * @param {string}	pane			The pane to process
        * @param {boolean=}	[force=false]	Size content after init
        */
, addPane = function (pane, force) {
    if (!force && !isInitialized()) return;
    var 
			o = options[pane]
		, s = state[pane]
		, c = _c[pane]
		, dir = c.dir
		, fx = s.fx
		, spacing = o.spacing_open || 0
		, isCenter = (pane === "center")
		, CSS = {}
		, $P = $Ps[pane]
		, size, minSize, maxSize, child
		;
    // if pane-pointer already exists, remove the old one first
    if ($P)
        removePane(pane, false, true, false);
    else
        $Cs[pane] = false; // init

    $P = $Ps[pane] = getPane(pane);
    if (!$P.length) {
        $Ps[pane] = false; // logic
        return;
    }

    // SAVE original Pane CSS
    if (!$P.data("layoutCSS")) {
        var props = "position,top,left,bottom,right,width,height,overflow,zIndex,display,backgroundColor,padding,margin,border";
        $P.data("layoutCSS", styles($P, props));
    }

    // create alias for pane data in Instance - initHandles will add more
    Instance[pane] = {
        name: pane
		, pane: $Ps[pane]
		, content: $Cs[pane]
		, options: options[pane]
		, state: state[pane]
		, children: children[pane]
    };

    // add classes, attributes & events
    $P.data({
        parentLayout: Instance		// pointer to Layout Instance
			, layoutPane: Instance[pane]	// NEW pointer to pane-alias-object
			, layoutEdge: pane
			, layoutRole: "pane"
    })
			.css(c.cssReq).css("zIndex", options.zIndexes.pane_normal)
			.css(o.applyDemoStyles ? c.cssDemo : {}) // demo styles
			.addClass(o.paneClass + " " + o.paneClass + "-" + pane) // default = "ui-layout-pane ui-layout-pane-west" - may be a dupe of 'paneSelector'
			.bind("mouseenter." + sID, addHover)
			.bind("mouseleave." + sID, removeHover)
			;
    var paneMethods = {
        hide: ''
			, show: ''
			, toggle: ''
			, close: ''
			, open: ''
			, slideOpen: ''
			, slideClose: ''
			, slideToggle: ''
			, size: 'sizePane'
			, sizePane: 'sizePane'
			, sizeContent: ''
			, sizeHandles: ''
			, enableClosable: ''
			, disableClosable: ''
			, enableSlideable: ''
			, disableSlideable: ''
			, enableResizable: ''
			, disableResizable: ''
			, swapPanes: 'swapPanes'
			, swap: 'swapPanes'
			, move: 'swapPanes'
			, removePane: 'removePane'
			, remove: 'removePane'
			, createChildren: ''
			, resizeChildren: ''
			, resizeAll: 'resizeAll'
			, resizeLayout: 'resizeAll'
    }
		, name;
    // loop hash and bind all methods - include layoutID namespacing
    for (name in paneMethods) {
        $P.bind("layoutpane" + name.toLowerCase() + "." + sID, Instance[paneMethods[name] || name]);
    }

    // see if this pane has a 'scrolling-content element'
    initContent(pane, false); // false = do NOT sizeContent() - called later

    if (!isCenter) {
        // call _parseSize AFTER applying pane classes & styles - but before making visible (if hidden)
        // if o.size is auto or not valid, then MEASURE the pane and use that as its 'size'
        size = s.size = _parseSize(pane, o.size);
        minSize = _parseSize(pane, o.minSize) || 1;
        maxSize = _parseSize(pane, o.maxSize) || 100000;
        if (size > 0) size = max(min(size, maxSize), minSize);
        s.autoResize = o.autoResize; // used with percentage sizes

        // state for border-panes
        s.isClosed = false; // true = pane is closed
        s.isSliding = false; // true = pane is currently open by 'sliding' over adjacent panes
        s.isResizing = false; // true = pane is in process of being resized
        s.isHidden = false; // true = pane is hidden - no spacing, resizer or toggler is visible!

        // array for 'pin buttons' whose classNames are auto-updated on pane-open/-close
        if (!s.pins) s.pins = [];
    }
    //	states common to ALL panes
    s.tagName = $P[0].tagName;
    s.edge = pane; 	// useful if pane is (or about to be) 'swapped' - easy find out where it is (or is going)
    s.noRoom = false; // true = pane 'automatically' hidden due to insufficient room - will unhide automatically
    s.isVisible = true; 	// false = pane is invisible - closed OR hidden - simplify logic

    // init pane positioning
    setPanePosition(pane);

    // if pane is not visible, 
    if (dir === "horz") // north or south pane
        CSS.height = cssH($P, size);
    else if (dir === "vert") // east or west pane
        CSS.width = cssW($P, size);
    //else if (isCenter) {}

    $P.css(CSS); // apply size -- top, bottom & height will be set by sizeMidPanes
    if (dir != "horz") sizeMidPanes(pane, true); // true = skipCallback

    // if manually adding a pane AFTER layout initialization, then...
    if (state.initialized) {
        initHandles(pane);
        initHotkeys(pane);
    }

    // close or hide the pane if specified in settings
    if (o.initClosed && o.closable && !o.initHidden)
        close(pane, true, true); // true, true = force, noAnimation
    else if (o.initHidden || o.initClosed)
        hide(pane); // will be completely invisible - no resizer or spacing
    else if (!s.noRoom)
    // make the pane visible - in case was initially hidden
        $P.css("display", "block");
    // ELSE setAsOpen() - called later by initHandles()

    // RESET visibility now - pane will appear IF display:block
    $P.css("visibility", "visible");

    // check option for auto-handling of pop-ups & drop-downs
    if (o.showOverflowOnHover)
        $P.hover(allowOverflow, resetOverflow);

    // if manually adding a pane AFTER layout initialization, then...
    if (state.initialized) {
        afterInitPane(pane);
    }
}

, afterInitPane = function (pane) {
    var $P = $Ps[pane]
		, s = state[pane]
		, o = options[pane]
		;
    if (!$P) return;

    // see if there is a directly-nested layout inside this pane
    if ($P.data("layout"))
        refreshChildren(pane, $P.data("layout"));

    // process pane contents and callbacks, and init/resize child-layout if exists
    if (s.isVisible) { // pane is OPEN
        if (state.initialized) // this pane was added AFTER layout was created
            resizeAll(); // will also sizeContent
        else
            sizeContent(pane);

        if (o.triggerEventsOnLoad)
            _runCallbacks("onresize_end", pane);
        else // automatic if onresize called, otherwise call it specifically
        // resize child - IF inner-layout already exists (created before this layout)
            resizeChildren(pane, true); // a previously existing childLayout
    }

    // init childLayouts - even if pane is not visible
    if (o.initChildren && o.children)
        createChildren(pane);
}

        /**
        * @param {string=}	panes		The pane(s) to process
        */
, setPanePosition = function (panes) {
    panes = panes ? panes.split(",") : _c.borderPanes;

    // create toggler DIVs for each pane, and set object pointers for them, eg: $R.north = north toggler DIV
    $.each(panes, function (i, pane) {
        var $P = $Ps[pane]
			, $R = $Rs[pane]
			, o = options[pane]
			, s = state[pane]
			, side = _c[pane].side
			, CSS = {}
			;
        if (!$P) return; // pane does not exist - skip

        // set css-position to account for container borders & padding
        switch (pane) {
            case "north": CSS.top = sC.inset.top;
                CSS.left = sC.inset.left;
                CSS.right = sC.inset.right;
                break;
            case "south": CSS.bottom = sC.inset.bottom;
                CSS.left = sC.inset.left;
                CSS.right = sC.inset.right;
                break;
            case "west": CSS.left = sC.inset.left; // top, bottom & height set by sizeMidPanes()
                break;
            case "east": CSS.right = sC.inset.right; // ditto
                break;
            case "center": // top, left, width & height set by sizeMidPanes()
        }
        // apply position
        $P.css(CSS);

        // update resizer position
        if ($R && s.isClosed)
            $R.css(side, sC.inset[side]);
        else if ($R && !s.isHidden)
            $R.css(side, sC.inset[side] + getPaneSize(pane));
    });
}

        /**
        * Initialize module objects, styling, size and position for all resize bars and toggler buttons
        *
        * @see  _create()
        * @param {string=}	[panes=""]	The edge(s) to process
        */
, initHandles = function (panes) {
    panes = panes ? panes.split(",") : _c.borderPanes;

    // create toggler DIVs for each pane, and set object pointers for them, eg: $R.north = north toggler DIV
    $.each(panes, function (i, pane) {
        var $P = $Ps[pane];
        $Rs[pane] = false; // INIT
        $Ts[pane] = false;
        if (!$P) return; // pane does not exist - skip

        var o = options[pane]
			, s = state[pane]
			, c = _c[pane]
			, paneId = o.paneSelector.substr(0, 1) === "#" ? o.paneSelector.substr(1) : ""
			, rClass = o.resizerClass
			, tClass = o.togglerClass
			, spacing = (s.isVisible ? o.spacing_open : o.spacing_closed)
			, _pane = "-" + pane // used for classNames
			, _state = (s.isVisible ? "-open" : "-closed") // used for classNames
			, I = Instance[pane]
        // INIT RESIZER BAR
			, $R = I.resizer = $Rs[pane] = $("<div></div>")
        // INIT TOGGLER BUTTON
			, $T = I.toggler = (o.closable ? $Ts[pane] = $("<div></div>") : false)
			;

        //if (s.isVisible && o.resizable) ... handled by initResizable
        if (!s.isVisible && o.slidable)
            $R.attr("title", o.tips.Slide).css("cursor", o.sliderCursor);

        $R	// if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "paneLeft-resizer"
				.attr("id", paneId ? paneId + "-resizer" : "")
				.data({
				    parentLayout: Instance
				, layoutPane: Instance[pane]	// NEW pointer to pane-alias-object
				, layoutEdge: pane
				, layoutRole: "resizer"
				})
				.css(_c.resizers.cssReq).css("zIndex", options.zIndexes.resizer_normal)
				.css(o.applyDemoStyles ? _c.resizers.cssDemo : {}) // add demo styles
				.addClass(rClass + " " + rClass + _pane)
				.hover(addHover, removeHover) // ALWAYS add hover-classes, even if resizing is not enabled - handle with CSS instead
				.hover(onResizerEnter, onResizerLeave) // ALWAYS NEED resizer.mouseleave to balance toggler.mouseenter
				.appendTo($N) // append DIV to container
			;
        if (o.resizerDblClickToggle)
            $R.bind("dblclick." + sID, toggle);

        if ($T) {
            $T	// if paneSelector is an ID, then create a matching ID for the resizer, eg: "#paneLeft" => "#paneLeft-toggler"
					.attr("id", paneId ? paneId + "-toggler" : "")
					.data({
					    parentLayout: Instance
					, layoutPane: Instance[pane]	// NEW pointer to pane-alias-object
					, layoutEdge: pane
					, layoutRole: "toggler"
					})
					.css(_c.togglers.cssReq) // add base/required styles
					.css(o.applyDemoStyles ? _c.togglers.cssDemo : {}) // add demo styles
					.addClass(tClass + " " + tClass + _pane)
					.hover(addHover, removeHover) // ALWAYS add hover-classes, even if toggling is not enabled - handle with CSS instead
					.bind("mouseenter", onResizerEnter) // NEED toggler.mouseenter because mouseenter MAY NOT fire on resizer
					.appendTo($R) // append SPAN to resizer DIV
				;
            // ADD INNER-SPANS TO TOGGLER
            if (o.togglerContent_open) // ui-layout-open
                $("<span>" + o.togglerContent_open + "</span>")
						.data({
						    layoutEdge: pane
						, layoutRole: "togglerContent"
						})
						.data("layoutRole", "togglerContent")
						.data("layoutEdge", pane)
						.addClass("content content-open")
						.css("display", "none")
						.appendTo($T)
            //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-open instead!
					;
            if (o.togglerContent_closed) // ui-layout-closed
                $("<span>" + o.togglerContent_closed + "</span>")
						.data({
						    layoutEdge: pane
						, layoutRole: "togglerContent"
						})
						.addClass("content content-closed")
						.css("display", "none")
						.appendTo($T)
            //.hover( addHover, removeHover ) // use ui-layout-toggler-west-hover .content-closed instead!
					;
            // ADD TOGGLER.click/.hover
            enableClosable(pane);
        }

        // add Draggable events
        initResizable(pane);

        // ADD CLASSNAMES & SLIDE-BINDINGS - eg: class="resizer resizer-west resizer-open"
        if (s.isVisible)
            setAsOpen(pane); // onOpen will be called, but NOT onResize
        else {
            setAsClosed(pane); // onClose will be called
            bindStartSlidingEvents(pane, true); // will enable events IF option is set
        }

    });

    // SET ALL HANDLE DIMENSIONS
    sizeHandles();
}


        /**
        * Initialize scrolling ui-layout-content div - if exists
        *
        * @see  initPane() - or externally after an Ajax injection
        * @param {string}	pane			The pane to process
        * @param {boolean=}	[resize=true]	Size content after init
        */
, initContent = function (pane, resize) {
    if (!isInitialized()) return;
    var 
			o = options[pane]
		, sel = o.contentSelector
		, I = Instance[pane]
		, $P = $Ps[pane]
		, $C
		;
    if (sel) $C = I.content = $Cs[pane] = (o.findNestedContent)
			? $P.find(sel).eq(0) // match 1-element only
			: $P.children(sel).eq(0)
		;
    if ($C && $C.length) {
        $C.data("layoutRole", "content");
        // SAVE original Content CSS
        if (!$C.data("layoutCSS"))
            $C.data("layoutCSS", styles($C, "height"));
        $C.css(_c.content.cssReq);
        if (o.applyDemoStyles) {
            $C.css(_c.content.cssDemo); // add padding & overflow: auto to content-div
            $P.css(_c.content.cssDemoPane); // REMOVE padding/scrolling from pane
        }
        // ensure no vertical scrollbar on pane - will mess up measurements
        if ($P.css("overflowX").match(/(scroll|auto)/)) {
            $P.css("overflow", "hidden");
        }
        state[pane].content = {}; // init content state
        if (resize !== false) sizeContent(pane);
        // sizeContent() is called AFTER init of all elements
    }
    else
        I.content = $Cs[pane] = false;
}


        /**
        * Add resize-bars to all panes that specify it in options
        * -dependancy: $.fn.resizable - will skip if not found
        *
        * @see  _create()
        * @param {string=}	[panes=""]	The edge(s) to process
        */
, initResizable = function (panes) {
    var draggingAvailable = $.layout.plugins.draggable
		, side // set in start()
		;
    panes = panes ? panes.split(",") : _c.borderPanes;

    $.each(panes, function (idx, pane) {
        var o = options[pane];
        if (!draggingAvailable || !$Ps[pane] || !o.resizable) {
            o.resizable = false;
            return true; // skip to next
        }

        var s = state[pane]
			, z = options.zIndexes
			, c = _c[pane]
			, side = c.dir == "horz" ? "top" : "left"
			, $P = $Ps[pane]
			, $R = $Rs[pane]
			, base = o.resizerClass
			, lastPos = 0 // used when live-resizing
			, r, live // set in start because may change
        //	'drag' classes are applied to the ORIGINAL resizer-bar while dragging is in process
			, resizerClass = base + "-drag"				// resizer-drag
			, resizerPaneClass = base + "-" + pane + "-drag"		// resizer-north-drag
        //	'helper' class is applied to the CLONED resizer-bar while it is being dragged
			, helperClass = base + "-dragging"			// resizer-dragging
			, helperPaneClass = base + "-" + pane + "-dragging" // resizer-north-dragging
			, helperLimitClass = base + "-dragging-limit"	// resizer-drag
			, helperPaneLimitClass = base + "-" + pane + "-dragging-limit"	// resizer-north-drag
			, helperClassesSet = false 					// logic var
			;

        if (!s.isClosed)
            $R.attr("title", o.tips.Resize)
				  .css("cursor", o.resizerCursor); // n-resize, s-resize, etc

        $R.draggable({
            containment: $N[0] // limit resizing to layout container
			, axis: (c.dir == "horz" ? "y" : "x") // limit resizing to horz or vert axis
			, delay: 0
			, distance: 1
			, grid: o.resizingGrid
            //	basic format for helper - style it using class: .ui-draggable-dragging
			, helper: "clone"
			, opacity: o.resizerDragOpacity
			, addClasses: false // avoid ui-state-disabled class when disabled
            //,	iframeFix:		o.draggableIframeFix // TODO: consider using when bug is fixed
			, zIndex: z.resizer_drag

			, start: function (e, ui) {
			    // REFRESH options & state pointers in case we used swapPanes
			    o = options[pane];
			    s = state[pane];
			    // re-read options
			    live = o.livePaneResizing;

			    // ondrag_start callback - will CANCEL hide if returns false
			    // TODO: dragging CANNOT be cancelled like this, so see if there is a way?
			    if (false === _runCallbacks("ondrag_start", pane)) return false;

			    s.isResizing = true; // prevent pane from closing while resizing
			    state.paneResizing = pane; // easy to see if ANY pane is resizing
			    timer.clear(pane + "_closeSlider"); // just in case already triggered

			    // SET RESIZER LIMITS - used in drag()
			    setSizeLimits(pane); // update pane/resizer state
			    r = s.resizerPosition;
			    lastPos = ui.position[side]

			    $R.addClass(resizerClass + " " + resizerPaneClass); // add drag classes
			    helperClassesSet = false; // reset logic var - see drag()

			    // DISABLE TEXT SELECTION (probably already done by resizer.mouseOver)
			    $('body').disableSelection();

			    // MASK PANES CONTAINING IFRAMES, APPLETS OR OTHER TROUBLESOME ELEMENTS
			    showMasks(pane, { resizing: true });
			}

			, drag: function (e, ui) {
			    if (!helperClassesSet) { // can only add classes after clone has been added to the DOM
			        //$(".ui-draggable-dragging")
			        ui.helper
							.addClass(helperClass + " " + helperPaneClass) // add helper classes
							.css({ right: "auto", bottom: "auto" })	// fix dir="rtl" issue
							.children().css("visibility", "hidden")	// hide toggler inside dragged resizer-bar
						;
			        helperClassesSet = true;
			        // draggable bug!? RE-SET zIndex to prevent E/W resize-bar showing through N/S pane!
			        if (s.isSliding) $Ps[pane].css("zIndex", z.pane_sliding);
			    }
			    // CONTAIN RESIZER-BAR TO RESIZING LIMITS
			    var limit = 0;
			    if (ui.position[side] < r.min) {
			        ui.position[side] = r.min;
			        limit = -1;
			    }
			    else if (ui.position[side] > r.max) {
			        ui.position[side] = r.max;
			        limit = 1;
			    }
			    // ADD/REMOVE dragging-limit CLASS
			    if (limit) {
			        ui.helper.addClass(helperLimitClass + " " + helperPaneLimitClass); // at dragging-limit
			        window.defaultStatus = (limit > 0 && pane.match(/(north|west)/)) || (limit < 0 && pane.match(/(south|east)/)) ? o.tips.maxSizeWarning : o.tips.minSizeWarning;
			    }
			    else {
			        ui.helper.removeClass(helperLimitClass + " " + helperPaneLimitClass); // not at dragging-limit
			        window.defaultStatus = "";
			    }
			    // DYNAMICALLY RESIZE PANES IF OPTION ENABLED
			    // won't trigger unless resizer has actually moved!
			    if (live && Math.abs(ui.position[side] - lastPos) >= o.liveResizingTolerance) {
			        lastPos = ui.position[side];
			        resizePanes(e, ui, pane)
			    }
			}

			, stop: function (e, ui) {
			    $('body').enableSelection(); // RE-ENABLE TEXT SELECTION
			    window.defaultStatus = ""; // clear 'resizing limit' message from statusbar
			    $R.removeClass(resizerClass + " " + resizerPaneClass); // remove drag classes from Resizer
			    s.isResizing = false;
			    state.paneResizing = false; // easy to see if ANY pane is resizing
			    resizePanes(e, ui, pane, true); // true = resizingDone
			}

        });
    });

    /**
    * resizePanes
    *
    * Sub-routine called from stop() - and drag() if livePaneResizing
    *
    * @param {!Object}		evt
    * @param {!Object}		ui
    * @param {string}		pane
    * @param {boolean=}		[resizingDone=false]
    */
    var resizePanes = function (evt, ui, pane, resizingDone) {
        var dragPos = ui.position
			, c = _c[pane]
			, o = options[pane]
			, s = state[pane]
			, resizerPos
			;
        switch (pane) {
            case "north": resizerPos = dragPos.top; break;
            case "west": resizerPos = dragPos.left; break;
            case "south": resizerPos = sC.layoutHeight - dragPos.top - o.spacing_open; break;
            case "east": resizerPos = sC.layoutWidth - dragPos.left - o.spacing_open; break;
        };
        // remove container margin from resizer position to get the pane size
        var newSize = resizerPos - sC.inset[c.side];

        // Disable OR Resize Mask(s) created in drag.start
        if (!resizingDone) {
            // ensure we meet liveResizingTolerance criteria
            if (Math.abs(newSize - s.size) < o.liveResizingTolerance)
                return; // SKIP resize this time
            // resize the pane
            manualSizePane(pane, newSize, false, true); // true = noAnimation
            sizeMasks(); // resize all visible masks
        }
        else { // resizingDone
            // ondrag_end callback
            if (false !== _runCallbacks("ondrag_end", pane))
                manualSizePane(pane, newSize, false, true); // true = noAnimation
            hideMasks(true); // true = force hiding all masks even if one is 'sliding'
            if (s.isSliding) // RE-SHOW 'object-masks' so objects won't show through sliding pane
                showMasks(pane, { resizing: true });
        }
    };
}

        /**
        *	sizeMask
        *
        *	Needed to overlay a DIV over an IFRAME-pane because mask CANNOT be *inside* the pane
        *	Called when mask created, and during livePaneResizing
        */
, sizeMask = function () {
    var $M = $(this)
		, pane = $M.data("layoutMask") // eg: "west"
		, s = state[pane]
		;
    // only masks over an IFRAME-pane need manual resizing
    if (s.tagName == "IFRAME" && s.isVisible) // no need to mask closed/hidden panes
        $M.css({
            top: s.offsetTop
			, left: s.offsetLeft
			, width: s.outerWidth
			, height: s.outerHeight
        });
    /* ALT Method...
    var $P = $Ps[pane];
    $M.css( $P.position() ).css({ width: $P[0].offsetWidth, height: $P[0].offsetHeight });
    */
}
, sizeMasks = function () {
    $Ms.each(sizeMask); // resize all 'visible' masks
}

        /**
        * @param {string}	pane		The pane being resized, animated or isSliding
        * @param {Object=}	[args]		(optional) Options: which masks to apply, and to which panes
        */
, showMasks = function (pane, args) {
    var c = _c[pane]
		, panes = ["center"]
		, z = options.zIndexes
		, a = $.extend({
		    objectsOnly: false
					, animation: false
					, resizing: true
					, sliding: state[pane].isSliding
		}, args)
		, o, s
		;
    if (a.resizing)
        panes.push(pane);
    if (a.sliding)
        panes.push(_c.oppositeEdge[pane]); // ADD the oppositeEdge-pane

    if (c.dir === "horz") {
        panes.push("west");
        panes.push("east");
    }

    $.each(panes, function (i, p) {
        s = state[p];
        o = options[p];
        if (s.isVisible && (o.maskObjects || (!a.objectsOnly && o.maskContents))) {
            getMasks(p).each(function () {
                sizeMask.call(this);
                this.style.zIndex = s.isSliding ? z.pane_sliding + 1 : z.pane_normal + 1
                this.style.display = "block";
            });
        }
    });
}

        /**
        * @param {boolean=}	force		Hide masks even if a pane is sliding
        */
, hideMasks = function (force) {
    // ensure no pane is resizing - could be a timing issue
    if (force || !state.paneResizing) {
        $Ms.hide(); // hide ALL masks
    }
    // if ANY pane is sliding, then DO NOT remove masks from panes with maskObjects enabled
    else if (!force && !$.isEmptyObject(state.panesSliding)) {
        var i = $Ms.length - 1
			, p, $M;
        for (; i >= 0; i--) {
            $M = $Ms.eq(i);
            p = $M.data("layoutMask");
            if (!options[p].maskObjects) {
                $M.hide();
            }
        }
    }
}

        /**
        * @param {string}	pane
        */
, getMasks = function (pane) {
    var $Masks = $([])
		, $M, i = 0, c = $Ms.length
		;
    for (; i < c; i++) {
        $M = $Ms.eq(i);
        if ($M.data("layoutMask") === pane)
            $Masks = $Masks.add($M);
    }
    if ($Masks.length)
        return $Masks;
    else
        return createMasks(pane);
}

        /**
        * createMasks
        *
        * Generates both DIV (ALWAYS used) and IFRAME (optional) elements as masks
        * An IFRAME mask is created *under* the DIV when maskObjects=true, because a DIV cannot mask an applet
        *
        * @param {string}	pane
        */
, createMasks = function (pane) {
    var 
			$P = $Ps[pane]
		, s = state[pane]
		, o = options[pane]
		, z = options.zIndexes
    //,	objMask	= o.maskObjects && s.tagName != "IFRAME" // check for option
		, $Masks = $([])
		, isIframe, el, $M, css, i
		;
    if (!o.maskContents && !o.maskObjects) return $Masks;
    // if o.maskObjects=true, then loop TWICE to create BOTH kinds of mask, else only create a DIV
    for (i = 0; i < (o.maskObjects ? 2 : 1); i++) {
        isIframe = o.maskObjects && i == 0;
        el = document.createElement(isIframe ? "iframe" : "div");
        $M = $(el).data("layoutMask", pane); // add data to relate mask to pane
        el.className = "ui-layout-mask ui-layout-mask-" + pane; // for user styling
        css = el.style;
        // styles common to both DIVs and IFRAMES
        css.display = "block";
        css.position = "absolute";
        css.background = "#FFF";
        if (isIframe) { // IFRAME-only props
            el.frameborder = 0;
            el.src = "about:blank";
            //el.allowTransparency = true; - for IE, but breaks masking ability!
            css.opacity = 0;
            css.filter = "Alpha(Opacity='0')";
            css.border = 0;
        }
        // if pane is an IFRAME, then must mask the pane itself
        if (s.tagName == "IFRAME") {
            // NOTE sizing done by a subroutine so can be called during live-resizing
            css.zIndex = z.pane_normal + 1; // 1-higher than pane
            $N.append(el); // append to LAYOUT CONTAINER
        }
        // otherwise put masks *inside the pane* to mask its contents
        else {
            $M.addClass("ui-layout-mask-inside-pane");
            css.zIndex = o.maskZindex || z.content_mask; // usually 1, but customizable
            css.top = 0;
            css.left = 0;
            css.width = "100%";
            css.height = "100%";
            $P.append(el); // append INSIDE pane element
        }
        // add to return object
        $Masks = $Masks.add(el);
        // add Mask to cached array so can be resized & reused
        $Ms = $Ms.add(el);
    }
    return $Masks;
}


        /**
        * Destroy this layout and reset all elements
        *
        * @param {boolean=}	[destroyChildren=false]		Destory Child-Layouts first?
        */
, destroy = function (evt_or_destroyChildren, destroyChildren) {
    // UNBIND layout events and remove global object
    $(window).unbind("." + sID); 	// resize & unload
    $(document).unbind("." + sID); // keyDown (hotkeys)

    if (typeof evt_or_destroyChildren === "object")
    // stopPropagation if called by trigger("layoutdestroy") - use evtPane utility 
        evtPane(evt_or_destroyChildren);
    else // no event, so transfer 1st param to destroyChildren param
        destroyChildren = evt_or_destroyChildren;

    // need to look for parent layout BEFORE we remove the container data, else skips a level
    //var parentPane = Instance.hasParentLayout ? $.layout.getParentPaneInstance( $N ) : null;

    // reset layout-container
    $N.clearQueue()
			.removeData("layout")
			.removeData("layoutContainer")
			.removeClass(options.containerClass)
			.unbind("." + sID) // remove ALL Layout events
		;

    // remove all mask elements that have been created
    $Ms.remove();

    // loop all panes to remove layout classes, attributes and bindings
    $.each(_c.allPanes, function (i, pane) {
        removePane(pane, false, true, destroyChildren); // true = skipResize
    });

    // do NOT reset container CSS if is a 'pane' (or 'content') in an outer-layout - ie, THIS layout is 'nested'
    var css = "layoutCSS";
    if ($N.data(css) && !$N.data("layoutRole")) // RESET CSS
        $N.css($N.data(css)).removeData(css);

    // for full-page layouts, also reset the <HTML> CSS
    if (sC.tagName === "BODY" && ($N = $("html")).data(css)) // RESET <HTML> CSS
        $N.css($N.data(css)).removeData(css);

    // trigger plugins for this layout, if there are any
    runPluginCallbacks(Instance, $.layout.onDestroy);

    // trigger state-management and onunload callback
    unload();

    // clear the Instance of everything except for container & options (so could recreate)
    // RE-CREATE: myLayout = myLayout.container.layout( myLayout.options );
    for (var n in Instance)
        if (!n.match(/^(container|options)$/)) delete Instance[n];
    // add a 'destroyed' flag to make it easy to check
    Instance.destroyed = true;

    // if this is a child layout, CLEAR the child-pointer in the parent
    /* for now the pointer REMAINS, but with only container, options and destroyed keys
    if (parentPane) {
    var layout	= parentPane.pane.data("parentLayout")
    ,	key		= layout.options.instanceKey || 'error';
    // THIS SYNTAX MAY BE WRONG!
    parentPane.children[key] = layout.children[ parentPane.name ].children[key] = null;
    }
    */

    return Instance; // for coding convenience
}

        /**
        * Remove a pane from the layout - subroutine of destroy()
        *
        * @see  destroy()
        * @param {(string|Object)}	evt_or_pane			The pane to process
        * @param {boolean=}			[remove=false]		Remove the DOM element?
        * @param {boolean=}			[skipResize=false]	Skip calling resizeAll()?
        * @param {boolean=}			[destroyChild=true]	Destroy Child-layouts? If not passed, obeys options setting
        */
, removePane = function (evt_or_pane, remove, skipResize, destroyChild) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, $P = $Ps[pane]
		, $C = $Cs[pane]
		, $R = $Rs[pane]
		, $T = $Ts[pane]
		;
    // NOTE: elements can still exist even after remove()
    //		so check for missing data(), which is cleared by removed()
    if ($P && $.isEmptyObject($P.data())) $P = false;
    if ($C && $.isEmptyObject($C.data())) $C = false;
    if ($R && $.isEmptyObject($R.data())) $R = false;
    if ($T && $.isEmptyObject($T.data())) $T = false;

    if ($P) $P.stop(true, true);

    var o = options[pane]
		, s = state[pane]
		, d = "layout"
		, css = "layoutCSS"
		, pC = children[pane]
		, hasChildren = $.isPlainObject(pC) && !$.isEmptyObject(pC)
		, destroy = destroyChild !== undefined ? destroyChild : o.destroyChildren
		;
    // FIRST destroy the child-layout(s)
    if (hasChildren && destroy) {
        $.each(pC, function (key, child) {
            if (!child.destroyed)
                child.destroy(true); // tell child-layout to destroy ALL its child-layouts too
            if (child.destroyed)	// destroy was successful
                delete pC[key];
        });
        // if no more children, remove the children hash
        if ($.isEmptyObject(pC)) {
            pC = children[pane] = null; // clear children hash
            hasChildren = false;
        }
    }

    // Note: can't 'remove' a pane element with non-destroyed children
    if ($P && remove && !hasChildren)
        $P.remove(); // remove the pane-element and everything inside it
    else if ($P && $P[0]) {
        //	create list of ALL pane-classes that need to be removed
        var root = o.paneClass // default="ui-layout-pane"
			, pRoot = root + "-" + pane // eg: "ui-layout-pane-west"
			, _open = "-open"
			, _sliding = "-sliding"
			, _closed = "-closed"
			, classes = [root, root + _open, root + _closed, root + _sliding, 	// generic classes
							pRoot, pRoot + _open, pRoot + _closed, pRoot + _sliding]	// pane-specific classes
			;
        $.merge(classes, getHoverClasses($P, true)); // ADD hover-classes
        // remove all Layout classes from pane-element
        $P.removeClass(classes.join(" ")) // remove ALL pane-classes
				.removeData("parentLayout")
				.removeData("layoutPane")
				.removeData("layoutRole")
				.removeData("layoutEdge")
				.removeData("autoHidden")	// in case set
				.unbind("." + sID) // remove ALL Layout events
        // TODO: remove these extra unbind commands when jQuery is fixed
        //.unbind("mouseenter"+ sID)
        //.unbind("mouseleave"+ sID)
			;
        // do NOT reset CSS if this pane/content is STILL the container of a nested layout!
        // the nested layout will reset its 'container' CSS when/if it is destroyed
        if (hasChildren && $C) {
            // a content-div may not have a specific width, so give it one to contain the Layout
            $C.width($C.width());
            $.each(pC, function (key, child) {
                child.resizeAll(); // resize the Layout
            });
        }
        else if ($C)
            $C.css($C.data(css)).removeData(css).removeData("layoutRole");
        // remove pane AFTER content in case there was a nested layout
        if (!$P.data(d))
            $P.css($P.data(css)).removeData(css);
    }

    // REMOVE pane resizer and toggler elements
    if ($T) $T.remove();
    if ($R) $R.remove();

    // CLEAR all pointers and state data
    Instance[pane] = $Ps[pane] = $Cs[pane] = $Rs[pane] = $Ts[pane] = false;
    s = { removed: true };

    if (!skipResize)
        resizeAll();
}


        /*
        * ###########################
        *	   ACTION METHODS
        * ###########################
        */

        /**
        * @param {string}	pane
        */
, _hidePane = function (pane) {
    var $P = $Ps[pane]
		, o = options[pane]
		, s = $P[0].style
		;
    if (o.useOffscreenClose) {
        if (!$P.data(_c.offscreenReset))
            $P.data(_c.offscreenReset, { left: s.left, right: s.right });
        $P.css(_c.offscreenCSS);
    }
    else
        $P.hide().removeData(_c.offscreenReset);
}

        /**
        * @param {string}	pane
        */
, _showPane = function (pane) {
    var $P = $Ps[pane]
		, o = options[pane]
		, off = _c.offscreenCSS
		, old = $P.data(_c.offscreenReset)
		, s = $P[0].style
		;
    $P.show() // ALWAYS show, just in case
			.removeData(_c.offscreenReset);
    if (o.useOffscreenClose && old) {
        if (s.left == off.left)
            s.left = old.left;
        if (s.right == off.right)
            s.right = old.right;
    }
}


        /**
        * Completely 'hides' a pane, including its spacing - as if it does not exist
        * The pane is not actually 'removed' from the source, so can use 'show' to un-hide it
        *
        * @param {(string|Object)}	evt_or_pane			The pane being hidden, ie: north, south, east, or west
        * @param {boolean=}			[noAnimation=false]	
        */
, hide = function (evt_or_pane, noAnimation) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, o = options[pane]
		, s = state[pane]
		, $P = $Ps[pane]
		, $R = $Rs[pane]
		;
    if (!$P || s.isHidden) return; // pane does not exist OR is already hidden

    // onhide_start callback - will CANCEL hide if returns false
    if (state.initialized && false === _runCallbacks("onhide_start", pane)) return;

    s.isSliding = false; // just in case
    delete state.panesSliding[pane];

    // now hide the elements
    if ($R) $R.hide(); // hide resizer-bar
    if (!state.initialized || s.isClosed) {
        s.isClosed = true; // to trigger open-animation on show()
        s.isHidden = true;
        s.isVisible = false;
        if (!state.initialized)
            _hidePane(pane); // no animation when loading page
        sizeMidPanes(_c[pane].dir === "horz" ? "" : "center");
        if (state.initialized || o.triggerEventsOnLoad)
            _runCallbacks("onhide_end", pane);
    }
    else {
        s.isHiding = true; // used by onclose
        close(pane, false, noAnimation); // adjust all panes to fit
    }
}

        /**
        * Show a hidden pane - show as 'closed' by default unless openPane = true
        *
        * @param {(string|Object)}	evt_or_pane			The pane being opened, ie: north, south, east, or west
        * @param {boolean=}			[openPane=false]
        * @param {boolean=}			[noAnimation=false]
        * @param {boolean=}			[noAlert=false]
        */
, show = function (evt_or_pane, openPane, noAnimation, noAlert) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, o = options[pane]
		, s = state[pane]
		, $P = $Ps[pane]
		, $R = $Rs[pane]
		;
    if (!$P || !s.isHidden) return; // pane does not exist OR is not hidden

    // onshow_start callback - will CANCEL show if returns false
    if (false === _runCallbacks("onshow_start", pane)) return;

    s.isShowing = true; // used by onopen/onclose
    //s.isHidden  = false; - will be set by open/close - if not cancelled
    s.isSliding = false; // just in case
    delete state.panesSliding[pane];

    // now show the elements
    //if ($R) $R.show(); - will be shown by open/close
    if (openPane === false)
        close(pane, true); // true = force
    else
        open(pane, false, noAnimation, noAlert); // adjust all panes to fit
}


        /**
        * Toggles a pane open/closed by calling either open or close
        *
        * @param {(string|Object)}	evt_or_pane		The pane being toggled, ie: north, south, east, or west
        * @param {boolean=}			[slide=false]
        */
, toggle = function (evt_or_pane, slide) {
    if (!isInitialized()) return;
    var evt = evtObj(evt_or_pane)
		, pane = evtPane.call(this, evt_or_pane)
		, s = state[pane]
		;
    if (evt) // called from to $R.dblclick OR triggerPaneEvent
        evt.stopImmediatePropagation();
    if (s.isHidden)
        show(pane); // will call 'open' after unhiding it
    else if (s.isClosed)
        open(pane, !!slide);
    else
        close(pane);
}


        /**
        * Utility method used during init or other auto-processes
        *
        * @param {string}	pane   The pane being closed
        * @param {boolean=}	[setHandles=false]
        */
, _closePane = function (pane, setHandles) {
    var 
			$P = $Ps[pane]
		, s = state[pane]
		;
    _hidePane(pane);
    s.isClosed = true;
    s.isVisible = false;
    if (setHandles) setAsClosed(pane);
}

        /**
        * Close the specified pane (animation optional), and resize all other panes as needed
        *
        * @param {(string|Object)}	evt_or_pane			The pane being closed, ie: north, south, east, or west
        * @param {boolean=}			[force=false]
        * @param {boolean=}			[noAnimation=false]
        * @param {boolean=}			[skipCallback=false]
        */
, close = function (evt_or_pane, force, noAnimation, skipCallback) {
    var pane = evtPane.call(this, evt_or_pane);
    // if pane has been initialized, but NOT the complete layout, close pane instantly
    if (!state.initialized && $Ps[pane]) {
        _closePane(pane, true); // INIT pane as closed
        return;
    }
    if (!isInitialized()) return;

    var 
			$P = $Ps[pane]
		, $R = $Rs[pane]
		, $T = $Ts[pane]
		, o = options[pane]
		, s = state[pane]
		, c = _c[pane]
		, doFX, isShowing, isHiding, wasSliding;

    // QUEUE in case another action/animation is in progress
    $N.queue(function (queueNext) {

        if (!$P
			|| (!o.closable && !s.isShowing && !s.isHiding)	// invalid request // (!o.resizable && !o.closable) ???
			|| (!force && s.isClosed && !s.isShowing)			// already closed
			) return queueNext();

        // onclose_start callback - will CANCEL hide if returns false
        // SKIP if just 'showing' a hidden pane as 'closed'
        var abort = !s.isShowing && false === _runCallbacks("onclose_start", pane);

        // transfer logic vars to temp vars
        isShowing = s.isShowing;
        isHiding = s.isHiding;
        wasSliding = s.isSliding;
        // now clear the logic vars (REQUIRED before aborting)
        delete s.isShowing;
        delete s.isHiding;

        if (abort) return queueNext();

        doFX = !noAnimation && !s.isClosed && (o.fxName_close != "none");
        s.isMoving = true;
        s.isClosed = true;
        s.isVisible = false;
        // update isHidden BEFORE sizing panes
        if (isHiding) s.isHidden = true;
        else if (isShowing) s.isHidden = false;

        if (s.isSliding) // pane is being closed, so UNBIND trigger events
            bindStopSlidingEvents(pane, false); // will set isSliding=false
        else // resize panes adjacent to this one
            sizeMidPanes(_c[pane].dir === "horz" ? "" : "center", false); // false = NOT skipCallback

        // if this pane has a resizer bar, move it NOW - before animation
        setAsClosed(pane);

        // CLOSE THE PANE
        if (doFX) { // animate the close
            lockPaneForFX(pane, true); // need to set left/top so animation will work
            $P.hide(o.fxName_close, o.fxSettings_close, o.fxSpeed_close, function () {
                lockPaneForFX(pane, false); // undo
                if (s.isClosed) close_2();
                queueNext();
            });
        }
        else { // hide the pane without animation
            _hidePane(pane);
            close_2();
            queueNext();
        };
    });

    // SUBROUTINE
    function close_2() {
        s.isMoving = false;
        bindStartSlidingEvents(pane, true); // will enable if o.slidable = true

        // if opposite-pane was autoClosed, see if it can be autoOpened now
        var altPane = _c.oppositeEdge[pane];
        if (state[altPane].noRoom) {
            setSizeLimits(altPane);
            makePaneFit(altPane);
        }

        if (!skipCallback && (state.initialized || o.triggerEventsOnLoad)) {
            // onclose callback - UNLESS just 'showing' a hidden pane as 'closed'
            if (!isShowing) _runCallbacks("onclose_end", pane);
            // onhide OR onshow callback
            if (isShowing) _runCallbacks("onshow_end", pane);
            if (isHiding) _runCallbacks("onhide_end", pane);
        }
    }
}

        /**
        * @param {string}	pane	The pane just closed, ie: north, south, east, or west
        */
, setAsClosed = function (pane) {
    if (!$Rs[pane]) return; // handles not initialized yet!
    var 
			$P = $Ps[pane]
		, $R = $Rs[pane]
		, $T = $Ts[pane]
		, o = options[pane]
		, s = state[pane]
		, side = _c[pane].side
		, rClass = o.resizerClass
		, tClass = o.togglerClass
		, _pane = "-" + pane // used for classNames
		, _open = "-open"
		, _sliding = "-sliding"
		, _closed = "-closed"
		;
    $R
			.css(side, sC.inset[side]) // move the resizer
			.removeClass(rClass + _open + " " + rClass + _pane + _open)
			.removeClass(rClass + _sliding + " " + rClass + _pane + _sliding)
			.addClass(rClass + _closed + " " + rClass + _pane + _closed)
		;
    // DISABLE 'resizing' when closed - do this BEFORE bindStartSlidingEvents?
    if (o.resizable && $.layout.plugins.draggable)
        $R
				.draggable("disable")
				.removeClass("ui-state-disabled") // do NOT apply disabled styling - not suitable here
				.css("cursor", "default")
				.attr("title", "")
			;

    // if pane has a toggler button, adjust that too
    if ($T) {
        $T
				.removeClass(tClass + _open + " " + tClass + _pane + _open)
				.addClass(tClass + _closed + " " + tClass + _pane + _closed)
				.attr("title", o.tips.Open) // may be blank
			;
        // toggler-content - if exists
        $T.children(".content-open").hide();
        $T.children(".content-closed").css("display", "block");
    }

    // sync any 'pin buttons'
    syncPinBtns(pane, false);

    if (state.initialized) {
        // resize 'length' and position togglers for adjacent panes
        sizeHandles();
    }
}

        /**
        * Open the specified pane (animation optional), and resize all other panes as needed
        *
        * @param {(string|Object)}	evt_or_pane			The pane being opened, ie: north, south, east, or west
        * @param {boolean=}			[slide=false]
        * @param {boolean=}			[noAnimation=false]
        * @param {boolean=}			[noAlert=false]
        */
, open = function (evt_or_pane, slide, noAnimation, noAlert) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, $P = $Ps[pane]
		, $R = $Rs[pane]
		, $T = $Ts[pane]
		, o = options[pane]
		, s = state[pane]
		, c = _c[pane]
		, doFX, isShowing
		;
    // QUEUE in case another action/animation is in progress
    $N.queue(function (queueNext) {

        if (!$P
			|| (!o.resizable && !o.closable && !s.isShowing)	// invalid request
			|| (s.isVisible && !s.isSliding)					// already open
			) return queueNext();

        // pane can ALSO be unhidden by just calling show(), so handle this scenario
        if (s.isHidden && !s.isShowing) {
            queueNext(); // call before show() because it needs the queue free
            show(pane, true);
            return;
        }

        if (s.autoResize && s.size != o.size) // resize pane to original size set in options
            sizePane(pane, o.size, true, true, true); // true=skipCallback/noAnimation/forceResize
        else
        // make sure there is enough space available to open the pane
            setSizeLimits(pane, slide);

        // onopen_start callback - will CANCEL open if returns false
        var cbReturn = _runCallbacks("onopen_start", pane);

        if (cbReturn === "abort")
            return queueNext();

        // update pane-state again in case options were changed in onopen_start
        if (cbReturn !== "NC") // NC = "No Callback"
            setSizeLimits(pane, slide);

        if (s.minSize > s.maxSize) { // INSUFFICIENT ROOM FOR PANE TO OPEN!
            syncPinBtns(pane, false); // make sure pin-buttons are reset
            if (!noAlert && o.tips.noRoomToOpen)
                alert(o.tips.noRoomToOpen);
            return queueNext(); // ABORT
        }

        if (slide) // START Sliding - will set isSliding=true
            bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
        else if (s.isSliding) // PIN PANE (stop sliding) - open pane 'normally' instead
            bindStopSlidingEvents(pane, false); // UNBIND trigger events - will set isSliding=false
        else if (o.slidable)
            bindStartSlidingEvents(pane, false); // UNBIND trigger events

        s.noRoom = false; // will be reset by makePaneFit if 'noRoom'
        makePaneFit(pane);

        // transfer logic var to temp var
        isShowing = s.isShowing;
        // now clear the logic var
        delete s.isShowing;

        doFX = !noAnimation && s.isClosed && (o.fxName_open != "none");
        s.isMoving = true;
        s.isVisible = true;
        s.isClosed = false;
        // update isHidden BEFORE sizing panes - WHY??? Old?
        if (isShowing) s.isHidden = false;

        if (doFX) { // ANIMATE
            // mask adjacent panes with objects
            lockPaneForFX(pane, true); // need to set left/top so animation will work
            $P.show(o.fxName_open, o.fxSettings_open, o.fxSpeed_open, function () {
                lockPaneForFX(pane, false); // undo
                if (s.isVisible) open_2(); // continue
                queueNext();
            });
        }
        else { // no animation
            _showPane(pane); // just show pane and...
            open_2(); 	// continue
            queueNext();
        };
    });

    // SUBROUTINE
    function open_2() {
        s.isMoving = false;

        // cure iframe display issues
        _fixIframe(pane);

        // NOTE: if isSliding, then other panes are NOT 'resized'
        if (!s.isSliding) { // resize all panes adjacent to this one
            sizeMidPanes(_c[pane].dir == "vert" ? "center" : "", false); // false = NOT skipCallback
        }

        // set classes, position handles and execute callbacks...
        setAsOpen(pane);
    };

}

        /**
        * @param {string}	pane		The pane just opened, ie: north, south, east, or west
        * @param {boolean=}	[skipCallback=false]
        */
, setAsOpen = function (pane, skipCallback) {
    var 
			$P = $Ps[pane]
		, $R = $Rs[pane]
		, $T = $Ts[pane]
		, o = options[pane]
		, s = state[pane]
		, side = _c[pane].side
		, rClass = o.resizerClass
		, tClass = o.togglerClass
		, _pane = "-" + pane // used for classNames
		, _open = "-open"
		, _closed = "-closed"
		, _sliding = "-sliding"
		;
    $R
			.css(side, sC.inset[side] + getPaneSize(pane)) // move the resizer
			.removeClass(rClass + _closed + " " + rClass + _pane + _closed)
			.addClass(rClass + _open + " " + rClass + _pane + _open)
		;
    if (s.isSliding)
        $R.addClass(rClass + _sliding + " " + rClass + _pane + _sliding)
    else // in case 'was sliding'
        $R.removeClass(rClass + _sliding + " " + rClass + _pane + _sliding)

    removeHover(0, $R); // remove hover classes
    if (o.resizable && $.layout.plugins.draggable)
        $R.draggable("enable")
				.css("cursor", o.resizerCursor)
				.attr("title", o.tips.Resize);
    else if (!s.isSliding)
        $R.css("cursor", "default"); // n-resize, s-resize, etc

    // if pane also has a toggler button, adjust that too
    if ($T) {
        $T.removeClass(tClass + _closed + " " + tClass + _pane + _closed)
				.addClass(tClass + _open + " " + tClass + _pane + _open)
				.attr("title", o.tips.Close); // may be blank
        removeHover(0, $T); // remove hover classes
        // toggler-content - if exists
        $T.children(".content-closed").hide();
        $T.children(".content-open").css("display", "block");
    }

    // sync any 'pin buttons'
    syncPinBtns(pane, !s.isSliding);

    // update pane-state dimensions - BEFORE resizing content
    $.extend(s, elDims($P));

    if (state.initialized) {
        // resize resizer & toggler sizes for all panes
        sizeHandles();
        // resize content every time pane opens - to be sure
        sizeContent(pane, true); // true = remeasure headers/footers, even if 'pane.isMoving'
    }

    if (!skipCallback && (state.initialized || o.triggerEventsOnLoad) && $P.is(":visible")) {
        // onopen callback
        _runCallbacks("onopen_end", pane);
        // onshow callback - TODO: should this be here?
        if (s.isShowing) _runCallbacks("onshow_end", pane);

        // ALSO call onresize because layout-size *may* have changed while pane was closed
        if (state.initialized)
            _runCallbacks("onresize_end", pane);
    }

    // TODO: Somehow sizePane("north") is being called after this point???
}


        /**
        * slideOpen / slideClose / slideToggle
        *
        * Pass-though methods for sliding
        */
, slideOpen = function (evt_or_pane) {
    if (!isInitialized()) return;
    var evt = evtObj(evt_or_pane)
		, pane = evtPane.call(this, evt_or_pane)
		, s = state[pane]
		, delay = options[pane].slideDelay_open
		;
    // prevent event from triggering on NEW resizer binding created below
    if (evt) evt.stopImmediatePropagation();

    if (s.isClosed && evt && evt.type === "mouseenter" && delay > 0)
    // trigger = mouseenter - use a delay
        timer.set(pane + "_openSlider", open_NOW, delay);
    else
        open_NOW(); // will unbind events if is already open

    /**
    * SUBROUTINE for timed open
    */
    function open_NOW() {
        if (!s.isClosed) // skip if no longer closed!
            bindStopSlidingEvents(pane, true); // BIND trigger events to close sliding-pane
        else if (!s.isMoving)
            open(pane, true); // true = slide - open() will handle binding
    };
}

, slideClose = function (evt_or_pane) {
    if (!isInitialized()) return;
    var evt = evtObj(evt_or_pane)
		, pane = evtPane.call(this, evt_or_pane)
		, o = options[pane]
		, s = state[pane]
		, delay = s.isMoving ? 1000 : 300 // MINIMUM delay - option may override
		;
    if (s.isClosed || s.isResizing)
        return; // skip if already closed OR in process of resizing
    else if (o.slideTrigger_close === "click")
        close_NOW(); // close immediately onClick
    else if (o.preventQuickSlideClose && s.isMoving)
        return; // handle Chrome quick-close on slide-open
    else if (o.preventPrematureSlideClose && evt && $.layout.isMouseOverElem(evt, $Ps[pane]))
        return; // handle incorrect mouseleave trigger, like when over a SELECT-list in IE
    else if (evt) // trigger = mouseleave - use a delay
    // 1 sec delay if 'opening', else .3 sec
        timer.set(pane + "_closeSlider", close_NOW, max(o.slideDelay_close, delay));
    else // called programically
        close_NOW();

    /**
    * SUBROUTINE for timed close
    */
    function close_NOW() {
        if (s.isClosed) // skip 'close' if already closed!
            bindStopSlidingEvents(pane, false); // UNBIND trigger events - TODO: is this needed here?
        else if (!s.isMoving)
            close(pane); // close will handle unbinding
    };
}

        /**
        * @param {(string|Object)}	evt_or_pane		The pane being opened, ie: north, south, east, or west
        */
, slideToggle = function (evt_or_pane) {
    var pane = evtPane.call(this, evt_or_pane);
    toggle(pane, true);
}


        /**
        * Must set left/top on East/South panes so animation will work properly
        *
        * @param {string}	pane	The pane to lock, 'east' or 'south' - any other is ignored!
        * @param {boolean}	doLock  true = set left/top, false = remove
        */
, lockPaneForFX = function (pane, doLock) {
    var $P = $Ps[pane]
		, s = state[pane]
		, o = options[pane]
		, z = options.zIndexes
		;
    if (doLock) {
        showMasks(pane, { animation: true, objectsOnly: true });
        $P.css({ zIndex: z.pane_animate }); // overlay all elements during animation
        if (pane == "south")
            $P.css({ top: sC.inset.top + sC.innerHeight - $P.outerHeight() });
        else if (pane == "east")
            $P.css({ left: sC.inset.left + sC.innerWidth - $P.outerWidth() });
    }
    else { // animation DONE - RESET CSS
        hideMasks();
        $P.css({ zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal) });
        if (pane == "south")
            $P.css({ top: "auto" });
        // if pane is positioned 'off-screen', then DO NOT screw with it!
        else if (pane == "east" && !$P.css("left").match(/\-99999/))
            $P.css({ left: "auto" });
        // fix anti-aliasing in IE - only needed for animations that change opacity
        if (browser.msie && o.fxOpacityFix && o.fxName_open != "slide" && $P.css("filter") && $P.css("opacity") == 1)
            $P[0].style.removeAttribute('filter');
    }
}


        /**
        * Toggle sliding functionality of a specific pane on/off by adding removing 'slide open' trigger
        *
        * @see  open(), close()
        * @param {string}	pane	The pane to enable/disable, 'north', 'south', etc.
        * @param {boolean}	enable	Enable or Disable sliding?
        */
, bindStartSlidingEvents = function (pane, enable) {
    var o = options[pane]
		, $P = $Ps[pane]
		, $R = $Rs[pane]
		, evtName = o.slideTrigger_open.toLowerCase()
		;
    if (!$R || (enable && !o.slidable)) return;

    // make sure we have a valid event
    if (evtName.match(/mouseover/))
        evtName = o.slideTrigger_open = "mouseenter";
    else if (!evtName.match(/(click|dblclick|mouseenter)/))
        evtName = o.slideTrigger_open = "click";

    // must remove double-click-toggle when using dblclick-slide
    if (o.resizerDblClickToggle && evtName.match(/click/)) {
        $R[enable ? "unbind" : "bind"]('dblclick.' + sID, toggle)
    }

    $R
    // add or remove event
			[enable ? "bind" : "unbind"](evtName + '.' + sID, slideOpen)
    // set the appropriate cursor & title/tip
			.css("cursor", enable ? o.sliderCursor : "default")
			.attr("title", enable ? o.tips.Slide : "")
		;
}

        /**
        * Add or remove 'mouseleave' events to 'slide close' when pane is 'sliding' open or closed
        * Also increases zIndex when pane is sliding open
        * See bindStartSlidingEvents for code to control 'slide open'
        *
        * @see  slideOpen(), slideClose()
        * @param {string}	pane	The pane to process, 'north', 'south', etc.
        * @param {boolean}	enable	Enable or Disable events?
        */
, bindStopSlidingEvents = function (pane, enable) {
    var o = options[pane]
		, s = state[pane]
		, c = _c[pane]
		, z = options.zIndexes
		, evtName = o.slideTrigger_close.toLowerCase()
		, action = (enable ? "bind" : "unbind")
		, $P = $Ps[pane]
		, $R = $Rs[pane]
		;
    timer.clear(pane + "_closeSlider"); // just in case

    if (enable) {
        s.isSliding = true;
        state.panesSliding[pane] = true;
        // remove 'slideOpen' event from resizer
        // ALSO will raise the zIndex of the pane & resizer
        bindStartSlidingEvents(pane, false);
    }
    else {
        s.isSliding = false;
        delete state.panesSliding[pane];
    }

    // RE/SET zIndex - increases when pane is sliding-open, resets to normal when not
    $P.css("zIndex", enable ? z.pane_sliding : z.pane_normal);
    $R.css("zIndex", enable ? z.pane_sliding + 2 : z.resizer_normal); // NOTE: mask = pane_sliding+1

    // make sure we have a valid event
    if (!evtName.match(/(click|mouseleave)/))
        evtName = o.slideTrigger_close = "mouseleave"; // also catches 'mouseout'

    // add/remove slide triggers
    $R[action](evtName, slideClose); // base event on resize
    // need extra events for mouseleave
    if (evtName === "mouseleave") {
        // also close on pane.mouseleave
        $P[action]("mouseleave." + sID, slideClose);
        // cancel timer when mouse moves between 'pane' and 'resizer'
        $R[action]("mouseenter." + sID, cancelMouseOut);
        $P[action]("mouseenter." + sID, cancelMouseOut);
    }

    if (!enable)
        timer.clear(pane + "_closeSlider");
    else if (evtName === "click" && !o.resizable) {
        // IF pane is not resizable (which already has a cursor and tip) 
        // then set the a cursor & title/tip on resizer when sliding
        $R.css("cursor", enable ? o.sliderCursor : "default");
        $R.attr("title", enable ? o.tips.Close : ""); // use Toggler-tip, eg: "Close Pane"
    }

    // SUBROUTINE for mouseleave timer clearing
    function cancelMouseOut(evt) {
        timer.clear(pane + "_closeSlider");
        evt.stopPropagation();
    }
}


        /**
        * Hides/closes a pane if there is insufficient room - reverses this when there is room again
        * MUST have already called setSizeLimits() before calling this method
        *
        * @param {string}	pane					The pane being resized
        * @param {boolean=}	[isOpening=false]		Called from onOpen?
        * @param {boolean=}	[skipCallback=false]	Should the onresize callback be run?
        * @param {boolean=}	[force=false]
        */
, makePaneFit = function (pane, isOpening, skipCallback, force) {
    var o = options[pane]
		, s = state[pane]
		, c = _c[pane]
		, $P = $Ps[pane]
		, $R = $Rs[pane]
		, isSidePane = c.dir === "vert"
		, hasRoom = false
		;
    // special handling for center & east/west panes
    if (pane === "center" || (isSidePane && s.noVerticalRoom)) {
        // see if there is enough room to display the pane
        // ERROR: hasRoom = s.minHeight <= s.maxHeight && (isSidePane || s.minWidth <= s.maxWidth);
        hasRoom = (s.maxHeight >= 0);
        if (hasRoom && s.noRoom) { // previously hidden due to noRoom, so show now
            _showPane(pane);
            if ($R) $R.show();
            s.isVisible = true;
            s.noRoom = false;
            if (isSidePane) s.noVerticalRoom = false;
            _fixIframe(pane);
        }
        else if (!hasRoom && !s.noRoom) { // not currently hidden, so hide now
            _hidePane(pane);
            if ($R) $R.hide();
            s.isVisible = false;
            s.noRoom = true;
        }
    }

    // see if there is enough room to fit the border-pane
    if (pane === "center") {
        // ignore center in this block
    }
    else if (s.minSize <= s.maxSize) { // pane CAN fit
        hasRoom = true;
        if (s.size > s.maxSize) // pane is too big - shrink it
            sizePane(pane, s.maxSize, skipCallback, true, force); // true = noAnimation
        else if (s.size < s.minSize) // pane is too small - enlarge it
            sizePane(pane, s.minSize, skipCallback, true, force); // true = noAnimation
        // need s.isVisible because new pseudoClose method keeps pane visible, but off-screen
        else if ($R && s.isVisible && $P.is(":visible")) {
            // make sure resizer-bar is positioned correctly
            // handles situation where nested layout was 'hidden' when initialized
            var pos = s.size + sC.inset[c.side];
            if ($.layout.cssNum($R, c.side) != pos) $R.css(c.side, pos);
        }

        // if was previously hidden due to noRoom, then RESET because NOW there is room
        if (s.noRoom) {
            // s.noRoom state will be set by open or show
            if (s.wasOpen && o.closable) {
                if (o.autoReopen)
                    open(pane, false, true, true); // true = noAnimation, true = noAlert
                else // leave the pane closed, so just update state
                    s.noRoom = false;
            }
            else
                show(pane, s.wasOpen, true, true); // true = noAnimation, true = noAlert
        }
    }
    else { // !hasRoom - pane CANNOT fit
        if (!s.noRoom) { // pane not set as noRoom yet, so hide or close it now...
            s.noRoom = true; // update state
            s.wasOpen = !s.isClosed && !s.isSliding;
            if (s.isClosed) { } // SKIP
            else if (o.closable) // 'close' if possible
                close(pane, true, true); // true = force, true = noAnimation
            else // 'hide' pane if cannot just be closed
                hide(pane, true); // true = noAnimation
        }
    }
}


        /**
        * manualSizePane is an exposed flow-through method allowing extra code when pane is 'manually resized'
        *
        * @param {(string|Object)}	evt_or_pane				The pane being resized
        * @param {number}			size					The *desired* new size for this pane - will be validated
        * @param {boolean=}			[skipCallback=false]	Should the onresize callback be run?
        * @param {boolean=}			[noAnimation=false]
        * @param {boolean=}			[force=false]			Force resizing even if does not seem necessary
        */
, manualSizePane = function (evt_or_pane, size, skipCallback, noAnimation, force) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, o = options[pane]
		, s = state[pane]
    //	if resizing callbacks have been delayed and resizing is now DONE, force resizing to complete...
		, forceResize = force || (o.livePaneResizing && !s.isResizing)
		;
    // ANY call to manualSizePane disables autoResize - ie, percentage sizing
    s.autoResize = false;
    // flow-through...
    sizePane(pane, size, skipCallback, noAnimation, forceResize); // will animate resize if option enabled
}

        /**
        * sizePane is called only by internal methods whenever a pane needs to be resized
        *
        * @param {(string|Object)}	evt_or_pane				The pane being resized
        * @param {number}			size					The *desired* new size for this pane - will be validated
        * @param {boolean=}			[skipCallback=false]	Should the onresize callback be run?
        * @param {boolean=}			[noAnimation=false]
        * @param {boolean=}			[force=false]			Force resizing even if does not seem necessary
        */
, sizePane = function (evt_or_pane, size, skipCallback, noAnimation, force) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane) // probably NEVER called from event?
		, o = options[pane]
		, s = state[pane]
		, $P = $Ps[pane]
		, $R = $Rs[pane]
		, side = _c[pane].side
		, dimName = _c[pane].sizeType.toLowerCase()
		, skipResizeWhileDragging = s.isResizing && !o.triggerEventsDuringLiveResize
		, doFX = noAnimation !== true && o.animatePaneSizing
		, oldSize, newSize
		;
    // QUEUE in case another action/animation is in progress
    $N.queue(function (queueNext) {
        // calculate 'current' min/max sizes
        setSizeLimits(pane); // update pane-state
        oldSize = s.size;
        size = _parseSize(pane, size); // handle percentages & auto
        size = max(size, _parseSize(pane, o.minSize));
        size = min(size, s.maxSize);
        if (size < s.minSize) { // not enough room for pane!
            queueNext(); // call before makePaneFit() because it needs the queue free
            makePaneFit(pane, false, skipCallback); // will hide or close pane
            return;
        }

        // IF newSize is same as oldSize, then nothing to do - abort
        if (!force && size === oldSize)
            return queueNext();

        s.newSize = size;

        // onresize_start callback CANNOT cancel resizing because this would break the layout!
        if (!skipCallback && state.initialized && s.isVisible)
            _runCallbacks("onresize_start", pane);

        // resize the pane, and make sure its visible
        newSize = cssSize(pane, size);

        if (doFX && $P.is(":visible")) { // ANIMATE
            var fx = $.layout.effects.size[pane] || $.layout.effects.size.all
				, easing = o.fxSettings_size.easing || fx.easing
				, z = options.zIndexes
				, props = {};
            props[dimName] = newSize + 'px';
            s.isMoving = true;
            // overlay all elements during animation
            $P.css({ zIndex: z.pane_animate })
				  .show().animate(props, o.fxSpeed_size, easing, function () {
				      // reset zIndex after animation
				      $P.css({ zIndex: (s.isSliding ? z.pane_sliding : z.pane_normal) });
				      s.isMoving = false;
				      delete s.newSize;
				      sizePane_2(); // continue
				      queueNext();
				  });
        }
        else { // no animation
            $P.css(dimName, newSize); // resize pane
            delete s.newSize;
            // if pane is visible, then 
            if ($P.is(":visible"))
                sizePane_2(); // continue
            else {
                // pane is NOT VISIBLE, so just update state data...
                // when pane is *next opened*, it will have the new size
                s.size = size; 			// update state.size
                $.extend(s, elDims($P)); // update state dimensions
            }
            queueNext();
        };

    });

    // SUBROUTINE
    function sizePane_2() {
        /*	Panes are sometimes not sized precisely in some browsers!?
        *	This code will resize the pane up to 3 times to nudge the pane to the correct size
        */
        var actual = dimName === 'width' ? $P.outerWidth() : $P.outerHeight()
			, tries = [{
			    pane: pane
						, count: 1
						, target: size
						, actual: actual
						, correct: (size === actual)
						, attempt: size
						, cssSize: newSize
			}]
			, lastTry = tries[0]
			, thisTry = {}
			, msg = 'Inaccurate size after resizing the ' + pane + '-pane.'
			;
        while (!lastTry.correct) {
            thisTry = { pane: pane, count: lastTry.count + 1, target: size };

            if (lastTry.actual > size)
                thisTry.attempt = max(0, lastTry.attempt - (lastTry.actual - size));
            else // lastTry.actual < size
                thisTry.attempt = max(0, lastTry.attempt + (size - lastTry.actual));

            thisTry.cssSize = cssSize(pane, thisTry.attempt);
            $P.css(dimName, thisTry.cssSize);

            thisTry.actual = dimName == 'width' ? $P.outerWidth() : $P.outerHeight();
            thisTry.correct = (size === thisTry.actual);

            // log attempts and alert the user of this *non-fatal error* (if showDebugMessages)
            if (tries.length === 1) {
                _log(msg, false, true);
                _log(lastTry, false, true);
            }
            _log(thisTry, false, true);
            // after 4 tries, is as close as its gonna get!
            if (tries.length > 3) break;

            tries.push(thisTry);
            lastTry = tries[tries.length - 1];
        }
        // END TESTING CODE

        // update pane-state dimensions
        s.size = size;
        $.extend(s, elDims($P));

        if (s.isVisible && $P.is(":visible")) {
            // reposition the resizer-bar
            if ($R) $R.css(side, size + sC.inset[side]);
            // resize the content-div
            sizeContent(pane);
        }

        if (!skipCallback && !skipResizeWhileDragging && state.initialized && s.isVisible)
            _runCallbacks("onresize_end", pane);

        // resize all the adjacent panes, and adjust their toggler buttons
        // when skipCallback passed, it means the controlling method will handle 'other panes'
        if (!skipCallback) {
            // also no callback if live-resize is in progress and NOT triggerEventsDuringLiveResize
            if (!s.isSliding) sizeMidPanes(_c[pane].dir == "horz" ? "" : "center", skipResizeWhileDragging, force);
            sizeHandles();
        }

        // if opposite-pane was autoClosed, see if it can be autoOpened now
        var altPane = _c.oppositeEdge[pane];
        if (size < oldSize && state[altPane].noRoom) {
            setSizeLimits(altPane);
            makePaneFit(altPane, false, skipCallback);
        }

        // DEBUG - ALERT user/developer so they know there was a sizing problem
        if (tries.length > 1)
            _log(msg + '\nSee the Error Console for details.', true, true);
    }
}

        /**
        * @see  initPanes(), sizePane(), 	resizeAll(), open(), close(), hide()
        * @param {(Array.<string>|string)}	panes					The pane(s) being resized, comma-delmited string
        * @param {boolean=}					[skipCallback=false]	Should the onresize callback be run?
        * @param {boolean=}					[force=false]
        */
, sizeMidPanes = function (panes, skipCallback, force) {
    panes = (panes ? panes : "east,west,center").split(",");

    $.each(panes, function (i, pane) {
        if (!$Ps[pane]) return; // NO PANE - skip
        var 
				o = options[pane]
			, s = state[pane]
			, $P = $Ps[pane]
			, $R = $Rs[pane]
			, isCenter = (pane == "center")
			, hasRoom = true
			, CSS = {}
        //	if pane is not visible, show it invisibly NOW rather than for *each call* in this script
			, visCSS = $.layout.showInvisibly($P)

			, newCenter = calcNewCenterPaneDims()
			;

        // update pane-state dimensions
        $.extend(s, elDims($P));

        if (pane === "center") {
            if (!force && s.isVisible && newCenter.width === s.outerWidth && newCenter.height === s.outerHeight) {
                $P.css(visCSS);
                return true; // SKIP - pane already the correct size
            }
            // set state for makePaneFit() logic
            $.extend(s, cssMinDims(pane), {
                maxWidth: newCenter.width
				, maxHeight: newCenter.height
            });
            CSS = newCenter;
            s.newWidth = CSS.width;
            s.newHeight = CSS.height;
            // convert OUTER width/height to CSS width/height 
            CSS.width = cssW($P, CSS.width);
            // NEW - allow pane to extend 'below' visible area rather than hide it
            CSS.height = cssH($P, CSS.height);
            hasRoom = CSS.width >= 0 && CSS.height >= 0; // height >= 0 = ALWAYS TRUE NOW

            // during layout init, try to shrink east/west panes to make room for center
            if (!state.initialized && o.minWidth > newCenter.width) {
                var 
						reqPx = o.minWidth - s.outerWidth
					, minE = options.east.minSize || 0
					, minW = options.west.minSize || 0
					, sizeE = state.east.size
					, sizeW = state.west.size
					, newE = sizeE
					, newW = sizeW
					;
                if (reqPx > 0 && state.east.isVisible && sizeE > minE) {
                    newE = max(sizeE - minE, sizeE - reqPx);
                    reqPx -= sizeE - newE;
                }
                if (reqPx > 0 && state.west.isVisible && sizeW > minW) {
                    newW = max(sizeW - minW, sizeW - reqPx);
                    reqPx -= sizeW - newW;
                }
                // IF we found enough extra space, then resize the border panes as calculated
                if (reqPx === 0) {
                    if (sizeE && sizeE != minE)
                        sizePane('east', newE, true, true, force); // true = skipCallback/noAnimation - initPanes will handle when done
                    if (sizeW && sizeW != minW)
                        sizePane('west', newW, true, true, force); // true = skipCallback/noAnimation
                    // now start over!
                    sizeMidPanes('center', skipCallback, force);
                    $P.css(visCSS);
                    return; // abort this loop
                }
            }
        }
        else { // for east and west, set only the height, which is same as center height
            // set state.min/maxWidth/Height for makePaneFit() logic
            if (s.isVisible && !s.noVerticalRoom)
                $.extend(s, elDims($P), cssMinDims(pane))
            if (!force && !s.noVerticalRoom && newCenter.height === s.outerHeight) {
                $P.css(visCSS);
                return true; // SKIP - pane already the correct size
            }
            // east/west have same top, bottom & height as center
            CSS.top = newCenter.top;
            CSS.bottom = newCenter.bottom;
            s.newSize = newCenter.height
            // NEW - allow pane to extend 'below' visible area rather than hide it
            CSS.height = cssH($P, newCenter.height);
            s.maxHeight = CSS.height;
            hasRoom = (s.maxHeight >= 0); // ALWAYS TRUE NOW
            if (!hasRoom) s.noVerticalRoom = true; // makePaneFit() logic
        }

        if (hasRoom) {
            // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
            if (!skipCallback && state.initialized)
                _runCallbacks("onresize_start", pane);

            $P.css(CSS); // apply the CSS to pane
            if (pane !== "center")
                sizeHandles(pane); // also update resizer length
            if (s.noRoom && !s.isClosed && !s.isHidden)
                makePaneFit(pane); // will re-open/show auto-closed/hidden pane
            if (s.isVisible) {
                $.extend(s, elDims($P)); // update pane dimensions
                if (state.initialized) sizeContent(pane); // also resize the contents, if exists
            }
        }
        else if (!s.noRoom && s.isVisible) // no room for pane
            makePaneFit(pane); // will hide or close pane

        // reset visibility, if necessary
        $P.css(visCSS);

        delete s.newSize;
        delete s.newWidth;
        delete s.newHeight;

        if (!s.isVisible)
            return true; // DONE - next pane

        /*
        * Extra CSS for IE6 or IE7 in Quirks-mode - add 'width' to NORTH/SOUTH panes
        * Normally these panes have only 'left' & 'right' positions so pane auto-sizes
        * ALSO required when pane is an IFRAME because will NOT default to 'full width'
        *	TODO: Can I use width:100% for a north/south iframe?
        *	TODO: Sounds like a job for $P.outerWidth( sC.innerWidth ) SETTER METHOD
        */
        if (pane === "center") { // finished processing midPanes
            var fix = browser.isIE6 || !browser.boxModel;
            if ($Ps.north && (fix || state.north.tagName == "IFRAME"))
                $Ps.north.css("width", cssW($Ps.north, sC.innerWidth));
            if ($Ps.south && (fix || state.south.tagName == "IFRAME"))
                $Ps.south.css("width", cssW($Ps.south, sC.innerWidth));
        }

        // resizeAll passes skipCallback because it triggers callbacks after ALL panes are resized
        if (!skipCallback && state.initialized)
            _runCallbacks("onresize_end", pane);
    });
}


        /**
        * @see  window.onresize(), callbacks or custom code
        * @param {(Object|boolean)=}	evt_or_refresh	If 'true', then also reset pane-positioning
        */
, resizeAll = function (evt_or_refresh) {
    var oldW = sC.innerWidth
		, oldH = sC.innerHeight
		;
    // stopPropagation if called by trigger("layoutdestroy") - use evtPane utility 
    evtPane(evt_or_refresh);

    // cannot size layout when 'container' is hidden or collapsed
    if (!$N.is(":visible")) return;

    if (!state.initialized) {
        _initLayoutElements();
        return; // no need to resize since we just initialized!
    }

    if (evt_or_refresh === true && $.isPlainObject(options.outset)) {
        // update container CSS in case outset option has changed
        $N.css(options.outset);
    }
    // UPDATE container dimensions
    $.extend(sC, elDims($N, options.inset));
    if (!sC.outerHeight) return;

    // if 'true' passed, refresh pane & handle positioning too
    if (evt_or_refresh === true) {
        setPanePosition();
    }

    // onresizeall_start will CANCEL resizing if returns false
    // state.container has already been set, so user can access this info for calcuations
    if (false === _runCallbacks("onresizeall_start")) return false;

    var // see if container is now 'smaller' than before
			shrunkH = (sC.innerHeight < oldH)
		, shrunkW = (sC.innerWidth < oldW)
		, $P, o, s
		;
    // NOTE special order for sizing: S-N-E-W
    $.each(["south", "north", "east", "west"], function (i, pane) {
        if (!$Ps[pane]) return; // no pane - SKIP
        o = options[pane];
        s = state[pane];
        if (s.autoResize && s.size != o.size) // resize pane to original size set in options
            sizePane(pane, o.size, true, true, true); // true=skipCallback/noAnimation/forceResize
        else {
            setSizeLimits(pane);
            makePaneFit(pane, false, true, true); // true=skipCallback/forceResize
        }
    });

    sizeMidPanes("", true, true); // true=skipCallback/forceResize
    sizeHandles(); // reposition the toggler elements

    // trigger all individual pane callbacks AFTER layout has finished resizing
    $.each(_c.allPanes, function (i, pane) {
        $P = $Ps[pane];
        if (!$P) return; // SKIP
        if (state[pane].isVisible) // undefined for non-existent panes
            _runCallbacks("onresize_end", pane); // callback - if exists
    });

    _runCallbacks("onresizeall_end");
    //_triggerLayoutEvent(pane, 'resizeall');
}

        /**
        * Whenever a pane resizes or opens that has a nested layout, trigger resizeAll
        *
        * @param {(string|Object)}	evt_or_pane		The pane just resized or opened
        */
, resizeChildren = function (evt_or_pane, skipRefresh) {
    var pane = evtPane.call(this, evt_or_pane);

    if (!options[pane].resizeChildren) return;

    // ensure the pane-children are up-to-date
    if (!skipRefresh) refreshChildren(pane);
    var pC = children[pane];
    if ($.isPlainObject(pC)) {
        // resize one or more children
        $.each(pC, function (key, child) {
            if (!child.destroyed) child.resizeAll();
        });
    }
}

        /**
        * IF pane has a content-div, then resize all elements inside pane to fit pane-height
        *
        * @param {(string|Object)}	evt_or_panes		The pane(s) being resized
        * @param {boolean=}			[remeasure=false]	Should the content (header/footer) be remeasured?
        */
, sizeContent = function (evt_or_panes, remeasure) {
    if (!isInitialized()) return;

    var panes = evtPane.call(this, evt_or_panes);
    panes = panes ? panes.split(",") : _c.allPanes;

    $.each(panes, function (idx, pane) {
        var 
				$P = $Ps[pane]
			, $C = $Cs[pane]
			, o = options[pane]
			, s = state[pane]
			, m = s.content // m = measurements
			;
        if (!$P || !$C || !$P.is(":visible")) return true; // NOT VISIBLE - skip

        // if content-element was REMOVED, update OR remove the pointer
        if (!$C.length) {
            initContent(pane, false); // false = do NOT sizeContent() - already there!
            if (!$C) return; 		// no replacement element found - pointer have been removed
        }

        // onsizecontent_start will CANCEL resizing if returns false
        if (false === _runCallbacks("onsizecontent_start", pane)) return;

        // skip re-measuring offsets if live-resizing
        if ((!s.isMoving && !s.isResizing) || o.liveContentResizing || remeasure || m.top == undefined) {
            _measure();
            // if any footers are below pane-bottom, they may not measure correctly,
            // so allow pane overflow and re-measure
            if (m.hiddenFooters > 0 && $P.css("overflow") === "hidden") {
                $P.css("overflow", "visible");
                _measure(); // remeasure while overflowing
                $P.css("overflow", "hidden");
            }
        }
        // NOTE: spaceAbove/Below *includes* the pane paddingTop/Bottom, but not pane.borders
        var newH = s.innerHeight - (m.spaceAbove - s.css.paddingTop) - (m.spaceBelow - s.css.paddingBottom);

        if (!$C.is(":visible") || m.height != newH) {
            // size the Content element to fit new pane-size - will autoHide if not enough room
            setOuterHeight($C, newH, true); // true=autoHide
            m.height = newH; // save new height
        };

        if (state.initialized)
            _runCallbacks("onsizecontent_end", pane);

        function _below($E) {
            return max(s.css.paddingBottom, (parseInt($E.css("marginBottom"), 10) || 0));
        };

        function _measure() {
            var 
					ignore = options[pane].contentIgnoreSelector
				, $Fs = $C.nextAll().not(".ui-layout-mask").not(ignore || ":lt(0)") // not :lt(0) = ALL
				, $Fs_vis = $Fs.filter(':visible')
				, $F = $Fs_vis.filter(':last')
				;
            m = {
                top: $C[0].offsetTop
				, height: $C.outerHeight()
				, numFooters: $Fs.length
				, hiddenFooters: $Fs.length - $Fs_vis.length
				, spaceBelow: 0 // correct if no content footer ($E)
            }
            m.spaceAbove = m.top; // just for state - not used in calc
            m.bottom = m.top + m.height;
            if ($F.length)
            //spaceBelow = (LastFooter.top + LastFooter.height) [footerBottom] - Content.bottom + max(LastFooter.marginBottom, pane.paddingBotom)
                m.spaceBelow = ($F[0].offsetTop + $F.outerHeight()) - m.bottom + _below($F);
            else // no footer - check marginBottom on Content element itself
                m.spaceBelow = _below($C);
        };
    });
}


        /**
        * Called every time a pane is opened, closed, or resized to slide the togglers to 'center' and adjust their length if necessary
        *
        * @see  initHandles(), open(), close(), resizeAll()
        * @param {(string|Object)=}		evt_or_panes	The pane(s) being resized
        */
, sizeHandles = function (evt_or_panes) {
    var panes = evtPane.call(this, evt_or_panes)
    panes = panes ? panes.split(",") : _c.borderPanes;

    $.each(panes, function (i, pane) {
        var 
				o = options[pane]
			, s = state[pane]
			, $P = $Ps[pane]
			, $R = $Rs[pane]
			, $T = $Ts[pane]
			, $TC
			;
        if (!$P || !$R) return;

        var 
				dir = _c[pane].dir
			, _state = (s.isClosed ? "_closed" : "_open")
			, spacing = o["spacing" + _state]
			, togAlign = o["togglerAlign" + _state]
			, togLen = o["togglerLength" + _state]
			, paneLen
			, left
			, offset
			, CSS = {}
			;

        if (spacing === 0) {
            $R.hide();
            return;
        }
        else if (!s.noRoom && !s.isHidden) // skip if resizer was hidden for any reason
            $R.show(); // in case was previously hidden

        // Resizer Bar is ALWAYS same width/height of pane it is attached to
        if (dir === "horz") { // north/south
            //paneLen = $P.outerWidth(); // s.outerWidth || 
            paneLen = sC.innerWidth; // handle offscreen-panes
            s.resizerLength = paneLen;
            left = $.layout.cssNum($P, "left")
            $R.css({
                width: cssW($R, paneLen) // account for borders & padding
				, height: cssH($R, spacing) // ditto
				, left: left > -9999 ? left : sC.inset.left // handle offscreen-panes
            });
        }
        else { // east/west
            paneLen = $P.outerHeight(); // s.outerHeight || 
            s.resizerLength = paneLen;
            $R.css({
                height: cssH($R, paneLen) // account for borders & padding
				, width: cssW($R, spacing) // ditto
				, top: sC.inset.top + getPaneSize("north", true) // TODO: what if no North pane?
                //,	top:	$.layout.cssNum($Ps["center"], "top")
            });
        }

        // remove hover classes
        removeHover(o, $R);

        if ($T) {
            if (togLen === 0 || (s.isSliding && o.hideTogglerOnSlide)) {
                $T.hide(); // always HIDE the toggler when 'sliding'
                return;
            }
            else
                $T.show(); // in case was previously hidden

            if (!(togLen > 0) || togLen === "100%" || togLen > paneLen) {
                togLen = paneLen;
                offset = 0;
            }
            else { // calculate 'offset' based on options.PANE.togglerAlign_open/closed
                if (isStr(togAlign)) {
                    switch (togAlign) {
                        case "top":
                        case "left": offset = 0;
                            break;
                        case "bottom":
                        case "right": offset = paneLen - togLen;
                            break;
                        case "middle":
                        case "center":
                        default: offset = round((paneLen - togLen) / 2); // 'default' catches typos
                    }
                }
                else { // togAlign = number
                    var x = parseInt(togAlign, 10); //
                    if (togAlign >= 0) offset = x;
                    else offset = paneLen - togLen + x; // NOTE: x is negative!
                }
            }

            if (dir === "horz") { // north/south
                var width = cssW($T, togLen);
                $T.css({
                    width: width  // account for borders & padding
					, height: cssH($T, spacing) // ditto
					, left: offset // TODO: VERIFY that toggler  positions correctly for ALL values
					, top: 0
                });
                // CENTER the toggler content SPAN
                $T.children(".content").each(function () {
                    $TC = $(this);
                    $TC.css("marginLeft", round((width - $TC.outerWidth()) / 2)); // could be negative
                });
            }
            else { // east/west
                var height = cssH($T, togLen);
                $T.css({
                    height: height // account for borders & padding
					, width: cssW($T, spacing) // ditto
					, top: offset // POSITION the toggler
					, left: 0
                });
                // CENTER the toggler content SPAN
                $T.children(".content").each(function () {
                    $TC = $(this);
                    $TC.css("marginTop", round((height - $TC.outerHeight()) / 2)); // could be negative
                });
            }

            // remove ALL hover classes
            removeHover(0, $T);
        }

        // DONE measuring and sizing this resizer/toggler, so can be 'hidden' now
        if (!state.initialized && (o.initHidden || s.isHidden)) {
            $R.hide();
            if ($T) $T.hide();
        }
    });
}


        /**
        * @param {(string|Object)}	evt_or_pane
        */
, enableClosable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, $T = $Ts[pane]
		, o = options[pane]
		;
    if (!$T) return;
    o.closable = true;
    $T.bind("click." + sID, function (evt) { evt.stopPropagation(); toggle(pane); })
			.css("visibility", "visible")
			.css("cursor", "pointer")
			.attr("title", state[pane].isClosed ? o.tips.Open : o.tips.Close) // may be blank
			.show();
}
        /**
        * @param {(string|Object)}	evt_or_pane
        * @param {boolean=}			[hide=false]
        */
, disableClosable = function (evt_or_pane, hide) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, $T = $Ts[pane]
		;
    if (!$T) return;
    options[pane].closable = false;
    // is closable is disable, then pane MUST be open!
    if (state[pane].isClosed) open(pane, false, true);
    $T.unbind("." + sID)
			.css("visibility", hide ? "hidden" : "visible") // instead of hide(), which creates logic issues
			.css("cursor", "default")
			.attr("title", "");
}


        /**
        * @param {(string|Object)}	evt_or_pane
        */
, enableSlidable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, $R = $Rs[pane]
		;
    if (!$R || !$R.data('draggable')) return;
    options[pane].slidable = true;
    if (state[pane].isClosed)
        bindStartSlidingEvents(pane, true);
}
        /**
        * @param {(string|Object)}	evt_or_pane
        */
, disableSlidable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, $R = $Rs[pane]
		;
    if (!$R) return;
    options[pane].slidable = false;
    if (state[pane].isSliding)
        close(pane, false, true);
    else {
        bindStartSlidingEvents(pane, false);
        $R.css("cursor", "default")
				.attr("title", "");
        removeHover(null, $R[0]); // in case currently hovered
    }
}


        /**
        * @param {(string|Object)}	evt_or_pane
        */
, enableResizable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, $R = $Rs[pane]
		, o = options[pane]
		;
    if (!$R || !$R.data('draggable')) return;
    o.resizable = true;
    $R.draggable("enable");
    if (!state[pane].isClosed)
        $R.css("cursor", o.resizerCursor)
			 	.attr("title", o.tips.Resize);
}
        /**
        * @param {(string|Object)}	evt_or_pane
        */
, disableResizable = function (evt_or_pane) {
    if (!isInitialized()) return;
    var pane = evtPane.call(this, evt_or_pane)
		, $R = $Rs[pane]
		;
    if (!$R || !$R.data('draggable')) return;
    options[pane].resizable = false;
    $R.draggable("disable")
			.css("cursor", "default")
			.attr("title", "");
    removeHover(null, $R[0]); // in case currently hovered
}


        /**
        * Move a pane from source-side (eg, west) to target-side (eg, east)
        * If pane exists on target-side, move that to source-side, ie, 'swap' the panes
        *
        * @param {(string|Object)}	evt_or_pane1	The pane/edge being swapped
        * @param {string}			pane2			ditto
        */
, swapPanes = function (evt_or_pane1, pane2) {
    if (!isInitialized()) return;
    var pane1 = evtPane.call(this, evt_or_pane1);
    // change state.edge NOW so callbacks can know where pane is headed...
    state[pane1].edge = pane2;
    state[pane2].edge = pane1;
    // run these even if NOT state.initialized
    if (false === _runCallbacks("onswap_start", pane1)
		 || false === _runCallbacks("onswap_start", pane2)
		) {
        state[pane1].edge = pane1; // reset
        state[pane2].edge = pane2;
        return;
    }

    var 
			oPane1 = copy(pane1)
		, oPane2 = copy(pane2)
		, sizes = {}
		;
    sizes[pane1] = oPane1 ? oPane1.state.size : 0;
    sizes[pane2] = oPane2 ? oPane2.state.size : 0;

    // clear pointers & state
    $Ps[pane1] = false;
    $Ps[pane2] = false;
    state[pane1] = {};
    state[pane2] = {};

    // ALWAYS remove the resizer & toggler elements
    if ($Ts[pane1]) $Ts[pane1].remove();
    if ($Ts[pane2]) $Ts[pane2].remove();
    if ($Rs[pane1]) $Rs[pane1].remove();
    if ($Rs[pane2]) $Rs[pane2].remove();
    $Rs[pane1] = $Rs[pane2] = $Ts[pane1] = $Ts[pane2] = false;

    // transfer element pointers and data to NEW Layout keys
    move(oPane1, pane2);
    move(oPane2, pane1);

    // cleanup objects
    oPane1 = oPane2 = sizes = null;

    // make panes 'visible' again
    if ($Ps[pane1]) $Ps[pane1].css(_c.visible);
    if ($Ps[pane2]) $Ps[pane2].css(_c.visible);

    // fix any size discrepancies caused by swap
    resizeAll();

    // run these even if NOT state.initialized
    _runCallbacks("onswap_end", pane1);
    _runCallbacks("onswap_end", pane2);

    return;

    function copy(n) { // n = pane
        var 
				$P = $Ps[n]
			, $C = $Cs[n]
			;
        return !$P ? false : {
            pane: n
			, P: $P ? $P[0] : false
			, C: $C ? $C[0] : false
			, state: $.extend(true, {}, state[n])
			, options: $.extend(true, {}, options[n])
        }
    };

    function move(oPane, pane) {
        if (!oPane) return;
        var 
				P = oPane.P
			, C = oPane.C
			, oldPane = oPane.pane
			, c = _c[pane]
        //	save pane-options that should be retained
			, s = $.extend(true, {}, state[pane])
			, o = options[pane]
        //	RETAIN side-specific FX Settings - more below
			, fx = { resizerCursor: o.resizerCursor }
			, re, size, pos
			;
        $.each("fxName,fxSpeed,fxSettings".split(","), function (i, k) {
            fx[k + "_open"] = o[k + "_open"];
            fx[k + "_close"] = o[k + "_close"];
            fx[k + "_size"] = o[k + "_size"];
        });

        // update object pointers and attributes
        $Ps[pane] = $(P)
				.data({
				    layoutPane: Instance[pane]	// NEW pointer to pane-alias-object
				, layoutEdge: pane
				})
				.css(_c.hidden)
				.css(c.cssReq)
			;
        $Cs[pane] = C ? $(C) : false;

        // set options and state
        options[pane] = $.extend(true, {}, oPane.options, fx);
        state[pane] = $.extend(true, {}, oPane.state);

        // change classNames on the pane, eg: ui-layout-pane-east ==> ui-layout-pane-west
        re = new RegExp(o.paneClass + "-" + oldPane, "g");
        P.className = P.className.replace(re, o.paneClass + "-" + pane);

        // ALWAYS regenerate the resizer & toggler elements
        initHandles(pane); // create the required resizer & toggler

        // if moving to different orientation, then keep 'target' pane size
        if (c.dir != _c[oldPane].dir) {
            size = sizes[pane] || 0;
            setSizeLimits(pane); // update pane-state
            size = max(size, state[pane].minSize);
            // use manualSizePane to disable autoResize - not useful after panes are swapped
            manualSizePane(pane, size, true, true); // true/true = skipCallback/noAnimation
        }
        else // move the resizer here
            $Rs[pane].css(c.side, sC.inset[c.side] + (state[pane].isVisible ? getPaneSize(pane) : 0));


        // ADD CLASSNAMES & SLIDE-BINDINGS
        if (oPane.state.isVisible && !s.isVisible)
            setAsOpen(pane, true); // true = skipCallback
        else {
            setAsClosed(pane);
            bindStartSlidingEvents(pane, true); // will enable events IF option is set
        }

        // DESTROY the object
        oPane = null;
    };
}


        /**
        * INTERNAL method to sync pin-buttons when pane is opened or closed
        * Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
        *
        * @see  open(), setAsOpen(), setAsClosed()
        * @param {string}	pane   These are the params returned to callbacks by layout()
        * @param {boolean}	doPin  True means set the pin 'down', False means 'up'
        */
, syncPinBtns = function (pane, doPin) {
    if ($.layout.plugins.buttons)
        $.each(state[pane].pins, function (i, selector) {
            $.layout.buttons.setPinState(Instance, $(selector), pane, doPin);
        });
}

; // END var DECLARATIONS

        /**
        * Capture keys when enableCursorHotkey - toggle pane if hotkey pressed
        *
        * @see  document.keydown()
        */
        function keyDown(evt) {
            if (!evt) return true;
            var code = evt.keyCode;
            if (code < 33) return true; // ignore special keys: ENTER, TAB, etc

            var 
			PANE = {
			    38: "north" // Up Cursor	- $.ui.keyCode.UP
			, 40: "south" // Down Cursor	- $.ui.keyCode.DOWN
			, 37: "west"  // Left Cursor	- $.ui.keyCode.LEFT
			, 39: "east"  // Right Cursor	- $.ui.keyCode.RIGHT
			}
		, ALT = evt.altKey // no worky!
		, SHIFT = evt.shiftKey
		, CTRL = evt.ctrlKey
		, CURSOR = (CTRL && code >= 37 && code <= 40)
		, o, k, m, pane
		;

            if (CURSOR && options[PANE[code]].enableCursorHotkey) // valid cursor-hotkey
                pane = PANE[code];
            else if (CTRL || SHIFT) // check to see if this matches a custom-hotkey
                $.each(_c.borderPanes, function (i, p) { // loop each pane to check its hotkey
                    o = options[p];
                    k = o.customHotkey;
                    m = o.customHotkeyModifier; // if missing or invalid, treated as "CTRL+SHIFT"
                    if ((SHIFT && m == "SHIFT") || (CTRL && m == "CTRL") || (CTRL && SHIFT)) { // Modifier matches
                        if (k && code === (isNaN(k) || k <= 9 ? k.toUpperCase().charCodeAt(0) : k)) { // Key matches
                            pane = p;
                            return false; // BREAK
                        }
                    }
                });

            // validate pane
            if (!pane || !$Ps[pane] || !options[pane].closable || state[pane].isHidden)
                return true;

            toggle(pane);

            evt.stopPropagation();
            evt.returnValue = false; // CANCEL key
            return false;
        };


        /*
        * ######################################
        *	UTILITY METHODS
        *	called externally or by initButtons
        * ######################################
        */

        /**
        * Change/reset a pane overflow setting & zIndex to allow popups/drop-downs to work
        *
        * @param {Object=}   [el]	(optional) Can also be 'bound' to a click, mouseOver, or other event
        */
        function allowOverflow(el) {
            if (!isInitialized()) return;
            if (this && this.tagName) el = this; // BOUND to element
            var $P;
            if (isStr(el))
                $P = $Ps[el];
            else if ($(el).data("layoutRole"))
                $P = $(el);
            else
                $(el).parents().each(function () {
                    if ($(this).data("layoutRole")) {
                        $P = $(this);
                        return false; // BREAK
                    }
                });
            if (!$P || !$P.length) return; // INVALID

            var 
			pane = $P.data("layoutEdge")
		, s = state[pane]
		;

            // if pane is already raised, then reset it before doing it again!
            // this would happen if allowOverflow is attached to BOTH the pane and an element 
            if (s.cssSaved)
                resetOverflow(pane); // reset previous CSS before continuing

            // if pane is raised by sliding or resizing, or its closed, then abort
            if (s.isSliding || s.isResizing || s.isClosed) {
                s.cssSaved = false;
                return;
            }

            var 
			newCSS = { zIndex: (options.zIndexes.resizer_normal + 1) }
		, curCSS = {}
		, of = $P.css("overflow")
		, ofX = $P.css("overflowX")
		, ofY = $P.css("overflowY")
		;
            // determine which, if any, overflow settings need to be changed
            if (of != "visible") {
                curCSS.overflow = of;
                newCSS.overflow = "visible";
            }
            if (ofX && !ofX.match(/(visible|auto)/)) {
                curCSS.overflowX = ofX;
                newCSS.overflowX = "visible";
            }
            if (ofY && !ofY.match(/(visible|auto)/)) {
                curCSS.overflowY = ofX;
                newCSS.overflowY = "visible";
            }

            // save the current overflow settings - even if blank!
            s.cssSaved = curCSS;

            // apply new CSS to raise zIndex and, if necessary, make overflow 'visible'
            $P.css(newCSS);

            // make sure the zIndex of all other panes is normal
            $.each(_c.allPanes, function (i, p) {
                if (p != pane) resetOverflow(p);
            });

        };
        /**
        * @param {Object=}   [el]	(optional) Can also be 'bound' to a click, mouseOver, or other event
        */
        function resetOverflow(el) {
            if (!isInitialized()) return;
            if (this && this.tagName) el = this; // BOUND to element
            var $P;
            if (isStr(el))
                $P = $Ps[el];
            else if ($(el).data("layoutRole"))
                $P = $(el);
            else
                $(el).parents().each(function () {
                    if ($(this).data("layoutRole")) {
                        $P = $(this);
                        return false; // BREAK
                    }
                });
            if (!$P || !$P.length) return; // INVALID

            var 
			pane = $P.data("layoutEdge")
		, s = state[pane]
		, CSS = s.cssSaved || {}
		;
            // reset the zIndex
            if (!s.isSliding && !s.isResizing)
                $P.css("zIndex", options.zIndexes.pane_normal);

            // reset Overflow - if necessary
            $P.css(CSS);

            // clear var
            s.cssSaved = false;
        };

        /*
        * #####################
        * CREATE/RETURN LAYOUT
        * #####################
        */

        // validate that container exists
        var $N = $(this).eq(0); // FIRST matching Container element
        if (!$N.length) {
            return _log(options.errors.containerMissing);
        };

        // Users retrieve Instance of a layout with: $N.layout() OR $N.data("layout")
        // return the Instance-pointer if layout has already been initialized
        if ($N.data("layoutContainer") && $N.data("layout"))
            return $N.data("layout"); // cached pointer

        // init global vars
        var 
		$Ps = {}	// Panes x5		- set in initPanes()
	, $Cs = {}	// Content x5	- set in initPanes()
	, $Rs = {}	// Resizers x4	- set in initHandles()
	, $Ts = {}	// Togglers x4	- set in initHandles()
	, $Ms = $([])	// Masks - up to 2 masks per pane (IFRAME + DIV)
        //	aliases for code brevity
	, sC = state.container // alias for easy access to 'container dimensions'
	, sID = state.id // alias for unique layout ID/namespace - eg: "layout435"
	;

        // create Instance object to expose data & option Properties, and primary action Methods
        var Instance = {
            //	layout data
            options: options			// property - options hash
	, state: state			// property - dimensions hash
            //	object pointers
	, container: $N				// property - object pointers for layout container
	, panes: $Ps				// property - object pointers for ALL Panes: panes.north, panes.center
	, contents: $Cs				// property - object pointers for ALL Content: contents.north, contents.center
	, resizers: $Rs				// property - object pointers for ALL Resizers, eg: resizers.north
	, togglers: $Ts				// property - object pointers for ALL Togglers, eg: togglers.north
            //	border-pane open/close
	, hide: hide			// method - ditto
	, show: show			// method - ditto
	, toggle: toggle			// method - pass a 'pane' ("north", "west", etc)
	, open: open			// method - ditto
	, close: close			// method - ditto
	, slideOpen: slideOpen		// method - ditto
	, slideClose: slideClose		// method - ditto
	, slideToggle: slideToggle		// method - ditto
            //	pane actions
	, setSizeLimits: setSizeLimits	// method - pass a 'pane' - update state min/max data
	, _sizePane: sizePane		// method -intended for user by plugins only!
	, sizePane: manualSizePane	// method - pass a 'pane' AND an 'outer-size' in pixels or percent, or 'auto'
	, sizeContent: sizeContent		// method - pass a 'pane'
	, swapPanes: swapPanes		// method - pass TWO 'panes' - will swap them
	, showMasks: showMasks		// method - pass a 'pane' OR list of panes - default = all panes with mask option set
	, hideMasks: hideMasks		// method - ditto'
            //	pane element methods
	, initContent: initContent		// method - ditto
	, addPane: addPane			// method - pass a 'pane'
	, removePane: removePane		// method - pass a 'pane' to remove from layout, add 'true' to delete the pane-elem
	, createChildren: createChildren	// method - pass a 'pane' and (optional) layout-options (OVERRIDES options[pane].children
	, refreshChildren: refreshChildren	// method - pass a 'pane' and a layout-instance
            //	special pane option setting
	, enableClosable: enableClosable	// method - pass a 'pane'
	, disableClosable: disableClosable	// method - ditto
	, enableSlidable: enableSlidable	// method - ditto
	, disableSlidable: disableSlidable	// method - ditto
	, enableResizable: enableResizable	// method - ditto
	, disableResizable: disableResizable// method - ditto
            //	utility methods for panes
	, allowOverflow: allowOverflow	// utility - pass calling element (this)
	, resetOverflow: resetOverflow	// utility - ditto
            //	layout control
	, destroy: destroy			// method - no parameters
	, initPanes: isInitialized	// method - no parameters
	, resizeAll: resizeAll		// method - no parameters
            //	callback triggering
	, runCallbacks: _runCallbacks	// method - pass evtName & pane (if a pane-event), eg: trigger("onopen", "west")
            //	alias collections of options, state and children - created in addPane and extended elsewhere
	, hasParentLayout: false			// set by initContainer()
	, children: children		// pointers to child-layouts, eg: Instance.children.west.layoutName
	, north: false			// alias group: { name: pane, pane: $Ps[pane], options: options[pane], state: state[pane], children: children[pane] }
	, south: false			// ditto
	, west: false			// ditto
	, east: false			// ditto
	, center: false			// ditto
        };

        // create the border layout NOW
        if (_create() === 'cancel') // onload_start callback returned false to CANCEL layout creation
            return null;
        else // true OR false -- if layout-elements did NOT init (hidden or do not exist), can auto-init later
            return Instance; // return the Instance object

    }


})(jQuery);
// END Layout - keep internal vars internal!



// START Plugins - shared wrapper, no global vars
(function ($) {


    /**
    * jquery.layout.state 1.0
    * $Date: 2011-07-16 08:00:00 (Sat, 16 July 2011) $
    *
    * Copyright (c) 2012 
    *   Kevin Dalman (http://allpro.net)
    *
    * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
    * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
    *
    * @requires: UI Layout 1.3.0.rc30.1 or higher
    * @requires: $.ui.cookie (above)
    *
    * @see: http://groups.google.com/group/jquery-ui-layout
    */
    /*
    *	State-management options stored in options.stateManagement, which includes a .cookie hash
    *	Default options saves ALL KEYS for ALL PANES, ie: pane.size, pane.isClosed, pane.isHidden
    *
    *	// STATE/COOKIE OPTIONS
    *	@example $(el).layout({
    stateManagement: {
    enabled:	true
    ,	stateKeys:	"east.size,west.size,east.isClosed,west.isClosed"
    ,	cookie:		{ name: "appLayout", path: "/" }
    }
    })
    *	@example $(el).layout({ stateManagement__enabled: true }) // enable auto-state-management using cookies
    *	@example $(el).layout({ stateManagement__cookie: { name: "appLayout", path: "/" } })
    *	@example $(el).layout({ stateManagement__cookie__name: "appLayout", stateManagement__cookie__path: "/" })
    *
    *	// STATE/COOKIE METHODS
    *	@example myLayout.saveCookie( "west.isClosed,north.size,south.isHidden", {expires: 7} );
    *	@example myLayout.loadCookie();
    *	@example myLayout.deleteCookie();
    *	@example var JSON = myLayout.readState();	// CURRENT Layout State
    *	@example var JSON = myLayout.readCookie();	// SAVED Layout State (from cookie)
    *	@example var JSON = myLayout.state.stateData;	// LAST LOADED Layout State (cookie saved in layout.state hash)
    *
    *	CUSTOM STATE-MANAGEMENT (eg, saved in a database)
    *	@example var JSON = myLayout.readState( "west.isClosed,north.size,south.isHidden" );
    *	@example myLayout.loadState( JSON );
    */

    /**
    *	UI COOKIE UTILITY
    *
    *	A $.cookie OR $.ui.cookie namespace *should be standard*, but until then...
    *	This creates $.ui.cookie so Layout does not need the cookie.jquery.js plugin
    *	NOTE: This utility is REQUIRED by the layout.state plugin
    *
    *	Cookie methods in Layout are created as part of State Management 
    */
    if (!$.ui) $.ui = {};
    $.ui.cookie = {

        // cookieEnabled is not in DOM specs, but DOES works in all browsers,including IE6
        acceptsCookies: !!navigator.cookieEnabled

, read: function (name) {
    var c = document.cookie
		, cs = c ? c.split(';') : []
		, pair	// loop var
		;
    for (var i = 0, n = cs.length; i < n; i++) {
        pair = $.trim(cs[i]).split('='); // name=value pair
        if (pair[0] == name) // found the layout cookie
            return decodeURIComponent(pair[1]);
    }
    return null;
}

, write: function (name, val, cookieOpts) {
    var params = ""
		, date = ""
		, clear = false
		, o = cookieOpts || {}
		, x = o.expires || null
		, t = $.type(x)
		;
    if (t === "date")
        date = x;
    else if (t === "string" && x > 0) {
        x = parseInt(x, 10);
        t = "number";
    }
    if (t === "number") {
        date = new Date();
        if (x > 0)
            date.setDate(date.getDate() + x);
        else {
            date.setFullYear(1970);
            clear = true;
        }
    }
    if (date) params += ";expires=" + date.toUTCString();
    if (o.path) params += ";path=" + o.path;
    if (o.domain) params += ";domain=" + o.domain;
    if (o.secure) params += ";secure";
    document.cookie = name + "=" + (clear ? "" : encodeURIComponent(val)) + params; // write or clear cookie
}

, clear: function (name) {
    $.ui.cookie.write(name, "", { expires: -1 });
}

    };
    // if cookie.jquery.js is not loaded, create an alias to replicate it
    // this may be useful to other plugins or code dependent on that plugin
    if (!$.cookie) $.cookie = function (k, v, o) {
        var C = $.ui.cookie;
        if (v === null)
            C.clear(k);
        else if (v === undefined)
            return C.read(k);
        else
            C.write(k, v, o);
    };


    // tell Layout that the state plugin is available
    $.layout.plugins.stateManagement = true;

    //	Add State-Management options to layout.defaults
    $.layout.config.optionRootKeys.push("stateManagement");
    $.layout.defaults.stateManagement = {
        enabled: false	// true = enable state-management, even if not using cookies
, autoSave: true	// Save a state-cookie when page exits?
, autoLoad: true	// Load the state-cookie when Layout inits?
, animateLoad: true	// animate panes when loading state into an active layout
, includeChildren: true	// recurse into child layouts to include their state as well
        // List state-data to save - must be pane-specific
, stateKeys: "north.size,south.size,east.size,west.size," +
				"north.isClosed,south.isClosed,east.isClosed,west.isClosed," +
				"north.isHidden,south.isHidden,east.isHidden,west.isHidden"
, cookie: {
    name: ""	// If not specified, will use Layout.name, else just "Layout"
	, domain: ""	// blank = current domain
	, path: ""	// blank = current page, "/" = entire website
	, expires: ""	// 'days' to keep cookie - leave blank for 'session cookie'
	, secure: false
}
    };
    // Set stateManagement as a layout-option, NOT a pane-option
    $.layout.optionsMap.layout.push("stateManagement");

    /*
    *	State Management methods
    */
    $.layout.state = {

        /**
        * Get the current layout state and save it to a cookie
        *
        * myLayout.saveCookie( keys, cookieOpts )
        *
        * @param {Object}			inst
        * @param {(string|Array)=}	keys
        * @param {Object=}			cookieOpts
        */
        saveCookie: function (inst, keys, cookieOpts) {
            var o = inst.options
		, sm = o.stateManagement
		, oC = $.extend(true, {}, sm.cookie, cookieOpts || null)
		, data = inst.state.stateData = inst.readState(keys || sm.stateKeys) // read current panes-state
		;
            $.ui.cookie.write(oC.name || o.name || "Layout", $.layout.state.encodeJSON(data), oC);
            return $.extend(true, {}, data); // return COPY of state.stateData data
        }

        /**
        * Remove the state cookie
        *
        * @param {Object}	inst
        */
, deleteCookie: function (inst) {
    var o = inst.options;
    $.ui.cookie.clear(o.stateManagement.cookie.name || o.name || "Layout");
}

        /**
        * Read & return data from the cookie - as JSON
        *
        * @param {Object}	inst
        */
, readCookie: function (inst) {
    var o = inst.options;
    var c = $.ui.cookie.read(o.stateManagement.cookie.name || o.name || "Layout");
    // convert cookie string back to a hash and return it
    return c ? $.layout.state.decodeJSON(c) : {};
}

        /**
        * Get data from the cookie and USE IT to loadState
        *
        * @param {Object}	inst
        */
, loadCookie: function (inst) {
    var c = $.layout.state.readCookie(inst); // READ the cookie
    if (c) {
        inst.state.stateData = $.extend(true, {}, c); // SET state.stateData
        inst.loadState(c); // LOAD the retrieved state
    }
    return c;
}

        /**
        * Update layout options from the cookie, if one exists
        *
        * @param {Object}		inst
        * @param {Object=}		stateData
        * @param {boolean=}	animate
        */
, loadState: function (inst, data, opts) {
    if (!$.isPlainObject(data) || $.isEmptyObject(data)) return;

    // normalize data & cache in the state object
    data = inst.state.stateData = $.layout.transformData(data); // panes = default subkey

    // add missing/default state-restore options
    var smo = inst.options.stateManagement;
    opts = $.extend({
        animateLoad: false //smo.animateLoad
		, includeChildren: smo.includeChildren
    }, opts);

    if (!inst.state.initialized) {
        /*
        *	layout NOT initialized, so just update its options
        */
        // MUST remove pane.children keys before applying to options
        // use a copy so we don't remove keys from original data
        var o = $.extend(true, {}, data);
        //delete o.center; // center has no state-data - only children
        $.each($.layout.config.allPanes, function (idx, pane) {
            if (o[pane]) delete o[pane].children;
        });
        // update CURRENT layout-options with saved state data
        $.extend(true, inst.options, o);
    }
    else {
        /*
        *	layout already initialized, so modify layout's configuration
        */
        var noAnimate = !opts.animateLoad
			, o, c, h, state, open
			;
        $.each($.layout.config.borderPanes, function (idx, pane) {
            o = data[pane];
            if (!$.isPlainObject(o)) return; // no key, skip pane

            s = o.size;
            c = o.initClosed;
            h = o.initHidden;
            ar = o.autoResize
            state = inst.state[pane];
            open = state.isVisible;

            // reset autoResize
            if (ar)
                state.autoResize = ar;
            // resize BEFORE opening
            if (!open)
                inst._sizePane(pane, s, false, false, false); // false=skipCallback/noAnimation/forceResize
            // open/close as necessary - DO NOT CHANGE THIS ORDER!
            if (h === true) inst.hide(pane, noAnimate);
            else if (c === true) inst.close(pane, false, noAnimate);
            else if (c === false) inst.open(pane, false, noAnimate);
            else if (h === false) inst.show(pane, false, noAnimate);
            // resize AFTER any other actions
            if (open)
                inst._sizePane(pane, s, false, false, noAnimate); // animate resize if option passed
        });

        /*
        *	RECURSE INTO CHILD-LAYOUTS
        */
        if (opts.includeChildren) {
            var paneStateChildren, childState;
            $.each(inst.children, function (pane, paneChildren) {
                paneStateChildren = data[pane] ? data[pane].children : 0;
                if (paneStateChildren && paneChildren) {
                    $.each(paneChildren, function (stateKey, child) {
                        childState = paneStateChildren[stateKey];
                        if (child && childState)
                            child.loadState(childState);
                    });
                }
            });
        }
    }
}

        /**
        * Get the *current layout state* and return it as a hash
        *
        * @param {Object=}		inst	// Layout instance to get state for
        * @param {object=}		[opts]	// State-Managements override options
        */
, readState: function (inst, opts) {
    // backward compatility
    if ($.type(opts) === 'string') opts = { keys: opts };
    if (!opts) opts = {};
    var sm = inst.options.stateManagement
		, ic = opts.includeChildren
		, recurse = ic !== undefined ? ic : sm.includeChildren
		, keys = opts.stateKeys || sm.stateKeys
		, alt = { isClosed: 'initClosed', isHidden: 'initHidden' }
		, state = inst.state
		, panes = $.layout.config.allPanes
		, data = {}
		, pair, pane, key, val
		, ps, pC, child, array, count, branch
		;
    if ($.isArray(keys)) keys = keys.join(",");
    // convert keys to an array and change delimiters from '__' to '.'
    keys = keys.replace(/__/g, ".").split(',');
    // loop keys and create a data hash
    for (var i = 0, n = keys.length; i < n; i++) {
        pair = keys[i].split(".");
        pane = pair[0];
        key = pair[1];
        if ($.inArray(pane, panes) < 0) continue; // bad pane!
        val = state[pane][key];
        if (val == undefined) continue;
        if (key == "isClosed" && state[pane]["isSliding"])
            val = true; // if sliding, then *really* isClosed
        (data[pane] || (data[pane] = {}))[alt[key] ? alt[key] : key] = val;
    }

    // recurse into the child-layouts for each pane
    if (recurse) {
        $.each(panes, function (idx, pane) {
            pC = inst.children[pane];
            ps = state.stateData[pane];
            if ($.isPlainObject(pC) && !$.isEmptyObject(pC)) {
                // ensure a key exists for this 'pane', eg: branch = data.center
                branch = data[pane] || (data[pane] = {});
                if (!branch.children) branch.children = {};
                $.each(pC, function (key, child) {
                    // ONLY read state from an initialize layout
                    if (child.state.initialized)
                        branch.children[key] = $.layout.state.readState(child);
                    // if we have PREVIOUS (onLoad) state for this child-layout, KEEP IT!
                    else if (ps && ps.children && ps.children[key]) {
                        branch.children[key] = $.extend(true, {}, ps.children[key]);
                    }
                });
            }
        });
    }

    return data;
}

        /**
        *	Stringify a JSON hash so can save in a cookie or db-field
        */
, encodeJSON: function (JSON) {
    return parse(JSON);
    function parse(h) {
        var D = [], i = 0, k, v, t // k = key, v = value
			, a = $.isArray(h)
			;
        for (k in h) {
            v = h[k];
            t = typeof v;
            if (t == 'string')		// STRING - add quotes
                v = '"' + v + '"';
            else if (t == 'object')	// SUB-KEY - recurse into it
                v = parse(v);
            D[i++] = (!a ? '"' + k + '":' : '') + v;
        }
        return (a ? '[' : '{') + D.join(',') + (a ? ']' : '}');
    };
}

        /**
        *	Convert stringified JSON back to a hash object
        *	@see		$.parseJSON(), adding in jQuery 1.4.1
        */
, decodeJSON: function (str) {
    try { return $.parseJSON ? $.parseJSON(str) : window["eval"]("(" + str + ")") || {}; }
    catch (e) { return {}; }
}


, _create: function (inst) {
    var _ = $.layout.state
		, o = inst.options
		, sm = o.stateManagement
		;
    //	ADD State-Management plugin methods to inst
    $.extend(inst, {
        //	readCookie - update options from cookie - returns hash of cookie data
        readCookie: function () { return _.readCookie(inst); }
        //	deleteCookie
		, deleteCookie: function () { _.deleteCookie(inst); }
        //	saveCookie - optionally pass keys-list and cookie-options (hash)
		, saveCookie: function (keys, cookieOpts) { return _.saveCookie(inst, keys, cookieOpts); }
        //	loadCookie - readCookie and use to loadState() - returns hash of cookie data
		, loadCookie: function () { return _.loadCookie(inst); }
        //	loadState - pass a hash of state to use to update options
		, loadState: function (stateData, opts) { _.loadState(inst, stateData, opts); }
        //	readState - returns hash of current layout-state
		, readState: function (keys) { return _.readState(inst, keys); }
        //	add JSON utility methods too...
		, encodeJSON: _.encodeJSON
		, decodeJSON: _.decodeJSON
    });

    // init state.stateData key, even if plugin is initially disabled
    inst.state.stateData = {};

    // autoLoad MUST BE one of: data-array, data-hash, callback-function, or TRUE
    if (!sm.autoLoad) return;

    //	When state-data exists in the autoLoad key USE IT,
    //	even if stateManagement.enabled == false
    if ($.isPlainObject(sm.autoLoad)) {
        if (!$.isEmptyObject(sm.autoLoad)) {
            inst.loadState(sm.autoLoad);
        }
    }
    else if (sm.enabled) {
        // update the options from cookie or callback
        // if options is a function, call it to get stateData
        if ($.isFunction(sm.autoLoad)) {
            var d = {};
            try {
                d = sm.autoLoad(inst, inst.state, inst.options, inst.options.name || ''); // try to get data from fn
            } catch (e) { }
            if (d && $.isPlainObject(d) && !$.isEmptyObject(d))
                inst.loadState(d);
        }
        else // any other truthy value will trigger loadCookie
            inst.loadCookie();
    }
}

, _unload: function (inst) {
    var sm = inst.options.stateManagement;
    if (sm.enabled && sm.autoSave) {
        // if options is a function, call it to save the stateData
        if ($.isFunction(sm.autoSave)) {
            try {
                sm.autoSave(inst, inst.state, inst.options, inst.options.name || ''); // try to get data from fn
            } catch (e) { }
        }
        else // any truthy value will trigger saveCookie
            inst.saveCookie();
    }
}

    };

    // add state initialization method to Layout's onCreate array of functions
    $.layout.onCreate.push($.layout.state._create);
    $.layout.onUnload.push($.layout.state._unload);




    /**
    * jquery.layout.buttons 1.0
    * $Date: 2011-07-16 08:00:00 (Sat, 16 July 2011) $
    *
    * Copyright (c) 2012 
    *   Kevin Dalman (http://allpro.net)
    *
    * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
    * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
    *
    * @requires: UI Layout 1.3.0.rc30.1 or higher
    *
    * @see: http://groups.google.com/group/jquery-ui-layout
    *
    * Docs: [ to come ]
    * Tips: [ to come ]
    */

    // tell Layout that the state plugin is available
    $.layout.plugins.buttons = true;

    //	Add buttons options to layout.defaults
    $.layout.defaults.autoBindCustomButtons = false;
    // Specify autoBindCustomButtons as a layout-option, NOT a pane-option
    $.layout.optionsMap.layout.push("autoBindCustomButtons");

    /*
    *	Button methods
    */
    $.layout.buttons = {

        /**
        * Searches for .ui-layout-button-xxx elements and auto-binds them as layout-buttons
        *
        * @see  _create()
        *
        * @param  {Object}		inst	Layout Instance object
        */
        init: function (inst) {
            var pre = "ui-layout-button-"
		, layout = inst.options.name || ""
		, name;
            $.each("toggle,open,close,pin,toggle-slide,open-slide".split(","), function (i, action) {
                $.each($.layout.config.borderPanes, function (ii, pane) {
                    $("." + pre + action + "-" + pane).each(function () {
                        // if button was previously 'bound', data.layoutName was set, but is blank if layout has no 'name'
                        name = $(this).data("layoutName") || $(this).attr("layoutName");
                        if (name == undefined || name === layout)
                            inst.bindButton(this, action, pane);
                    });
                });
            });
        }

        /**
        * Helper function to validate params received by addButton utilities
        *
        * Two classes are added to the element, based on the buttonClass...
        * The type of button is appended to create the 2nd className:
        *  - ui-layout-button-pin		// action btnClass
        *  - ui-layout-button-pin-west	// action btnClass + pane
        *  - ui-layout-button-toggle
        *  - ui-layout-button-open
        *  - ui-layout-button-close
        *
        * @param {Object}			inst		Layout Instance object
        * @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
        * @param {string}   		pane 		Name of the pane the button is for: 'north', 'south', etc.
        *
        * @return {Array.<Object>}	If both params valid, the element matching 'selector' in a jQuery wrapper - otherwise returns null
        */
, get: function (inst, selector, pane, action) {
    var $E = $(selector)
		, o = inst.options
		, err = o.errors.addButtonError
		;
    if (!$E.length) { // element not found
        $.layout.msg(err + " " + o.errors.selector + ": " + selector, true);
    }
    else if ($.inArray(pane, $.layout.config.borderPanes) < 0) { // invalid 'pane' sepecified
        $.layout.msg(err + " " + o.errors.pane + ": " + pane, true);
        $E = $("");  // NO BUTTON
    }
    else { // VALID
        var btn = o[pane].buttonClass + "-" + action;
        $E.addClass(btn + " " + btn + "-" + pane)
				.data("layoutName", o.name); // add layout identifier - even if blank!
    }
    return $E;
}


        /**
        * NEW syntax for binding layout-buttons - will eventually replace addToggle, addOpen, etc.
        *
        * @param {Object}			inst		Layout Instance object
        * @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
        * @param {string}			action
        * @param {string}			pane
        */
, bind: function (inst, selector, action, pane) {
    var _ = $.layout.buttons;
    switch (action.toLowerCase()) {
        case "toggle": _.addToggle(inst, selector, pane); break;
        case "open": _.addOpen(inst, selector, pane); break;
        case "close": _.addClose(inst, selector, pane); break;
        case "pin": _.addPin(inst, selector, pane); break;
        case "toggle-slide": _.addToggle(inst, selector, pane, true); break;
        case "open-slide": _.addOpen(inst, selector, pane, true); break;
    }
    return inst;
}

        /**
        * Add a custom Toggler button for a pane
        *
        * @param {Object}			inst		Layout Instance object
        * @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
        * @param {string}  			pane 		Name of the pane the button is for: 'north', 'south', etc.
        * @param {boolean=}			slide 		true = slide-open, false = pin-open
        */
, addToggle: function (inst, selector, pane, slide) {
    $.layout.buttons.get(inst, selector, pane, "toggle")
			.click(function (evt) {
			    inst.toggle(pane, !!slide);
			    evt.stopPropagation();
			});
    return inst;
}

        /**
        * Add a custom Open button for a pane
        *
        * @param {Object}			inst		Layout Instance object
        * @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
        * @param {string}			pane 		Name of the pane the button is for: 'north', 'south', etc.
        * @param {boolean=}			slide 		true = slide-open, false = pin-open
        */
, addOpen: function (inst, selector, pane, slide) {
    $.layout.buttons.get(inst, selector, pane, "open")
			.attr("title", inst.options[pane].tips.Open)
			.click(function (evt) {
			    inst.open(pane, !!slide);
			    evt.stopPropagation();
			});
    return inst;
}

        /**
        * Add a custom Close button for a pane
        *
        * @param {Object}			inst		Layout Instance object
        * @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
        * @param {string}   		pane 		Name of the pane the button is for: 'north', 'south', etc.
        */
, addClose: function (inst, selector, pane) {
    $.layout.buttons.get(inst, selector, pane, "close")
			.attr("title", inst.options[pane].tips.Close)
			.click(function (evt) {
			    inst.close(pane);
			    evt.stopPropagation();
			});
    return inst;
}

        /**
        * Add a custom Pin button for a pane
        *
        * Four classes are added to the element, based on the paneClass for the associated pane...
        * Assuming the default paneClass and the pin is 'up', these classes are added for a west-pane pin:
        *  - ui-layout-pane-pin
        *  - ui-layout-pane-west-pin
        *  - ui-layout-pane-pin-up
        *  - ui-layout-pane-west-pin-up
        *
        * @param {Object}			inst		Layout Instance object
        * @param {(string|!Object)}	selector	jQuery selector (or element) for button, eg: ".ui-layout-north .toggle-button"
        * @param {string}   		pane 		Name of the pane the pin is for: 'north', 'south', etc.
        */
, addPin: function (inst, selector, pane) {
    var _ = $.layout.buttons
		, $E = _.get(inst, selector, pane, "pin");
    if ($E.length) {
        var s = inst.state[pane];
        $E.click(function (evt) {
            _.setPinState(inst, $(this), pane, (s.isSliding || s.isClosed));
            if (s.isSliding || s.isClosed) inst.open(pane); // change from sliding to open
            else inst.close(pane); // slide-closed
            evt.stopPropagation();
        });
        // add up/down pin attributes and classes
        _.setPinState(inst, $E, pane, (!s.isClosed && !s.isSliding));
        // add this pin to the pane data so we can 'sync it' automatically
        // PANE.pins key is an array so we can store multiple pins for each pane
        s.pins.push(selector); // just save the selector string
    }
    return inst;
}

        /**
        * Change the class of the pin button to make it look 'up' or 'down'
        *
        * @see  addPin(), syncPins()
        *
        * @param {Object}			inst	Layout Instance object
        * @param {Array.<Object>}	$Pin	The pin-span element in a jQuery wrapper
        * @param {string}			pane	These are the params returned to callbacks by layout()
        * @param {boolean}			doPin	true = set the pin 'down', false = set it 'up'
        */
, setPinState: function (inst, $Pin, pane, doPin) {
    var updown = $Pin.attr("pin");
    if (updown && doPin === (updown == "down")) return; // already in correct state
    var 
			o = inst.options[pane]
		, pin = o.buttonClass + "-pin"
		, side = pin + "-" + pane
		, UP = pin + "-up " + side + "-up"
		, DN = pin + "-down " + side + "-down"
		;
    $Pin
			.attr("pin", doPin ? "down" : "up") // logic
			.attr("title", doPin ? o.tips.Unpin : o.tips.Pin)
			.removeClass(doPin ? UP : DN)
			.addClass(doPin ? DN : UP)
		;
}

        /**
        * INTERNAL function to sync 'pin buttons' when pane is opened or closed
        * Unpinned means the pane is 'sliding' - ie, over-top of the adjacent panes
        *
        * @see  open(), close()
        *
        * @param {Object}			inst	Layout Instance object
        * @param {string}	pane	These are the params returned to callbacks by layout()
        * @param {boolean}	doPin	True means set the pin 'down', False means 'up'
        */
, syncPinBtns: function (inst, pane, doPin) {
    // REAL METHOD IS _INSIDE_ LAYOUT - THIS IS HERE JUST FOR REFERENCE
    $.each(inst.state[pane].pins, function (i, selector) {
        $.layout.buttons.setPinState(inst, $(selector), pane, doPin);
    });
}


, _load: function (inst) {
    var _ = $.layout.buttons;
    // ADD Button methods to Layout Instance
    // Note: sel = jQuery Selector string
    $.extend(inst, {
        bindButton: function (sel, action, pane) { return _.bind(inst, sel, action, pane); }
        //	DEPRECATED METHODS
		, addToggleBtn: function (sel, pane, slide) { return _.addToggle(inst, sel, pane, slide); }
		, addOpenBtn: function (sel, pane, slide) { return _.addOpen(inst, sel, pane, slide); }
		, addCloseBtn: function (sel, pane) { return _.addClose(inst, sel, pane); }
		, addPinBtn: function (sel, pane) { return _.addPin(inst, sel, pane); }
    });

    // init state array to hold pin-buttons
    for (var i = 0; i < 4; i++) {
        var pane = $.layout.config.borderPanes[i];
        inst.state[pane].pins = [];
    }

    // auto-init buttons onLoad if option is enabled
    if (inst.options.autoBindCustomButtons)
        _.init(inst);
}

, _unload: function (inst) {
    // TODO: unbind all buttons???
}

    };

    // add initialization method to Layout's onLoad array of functions
    $.layout.onLoad.push($.layout.buttons._load);
    //$.layout.onUnload.push( $.layout.buttons._unload );



    /**
    * jquery.layout.browserZoom 1.0
    * $Date: 2011-12-29 08:00:00 (Thu, 29 Dec 2011) $
    *
    * Copyright (c) 2012 
    *   Kevin Dalman (http://allpro.net)
    *
    * Dual licensed under the GPL (http://www.gnu.org/licenses/gpl.html)
    * and MIT (http://www.opensource.org/licenses/mit-license.php) licenses.
    *
    * @requires: UI Layout 1.3.0.rc30.1 or higher
    *
    * @see: http://groups.google.com/group/jquery-ui-layout
    *
    * TODO: Extend logic to handle other problematic zooming in browsers
    * TODO: Add hotkey/mousewheel bindings to _instantly_ respond to these zoom event
    */

    // tell Layout that the plugin is available
    $.layout.plugins.browserZoom = true;

    $.layout.defaults.browserZoomCheckInterval = 1000;
    $.layout.optionsMap.layout.push("browserZoomCheckInterval");

    /*
    *	browserZoom methods
    */
    $.layout.browserZoom = {

        _init: function (inst) {
            // abort if browser does not need this check
            if ($.layout.browserZoom.ratio() !== false)
                $.layout.browserZoom._setTimer(inst);
        }

, _setTimer: function (inst) {
    // abort if layout destroyed or browser does not need this check
    if (inst.destroyed) return;
    var o = inst.options
		, s = inst.state
    //	don't need check if inst has parentLayout, but check occassionally in case parent destroyed!
    //	MINIMUM 100ms interval, for performance
		, ms = inst.hasParentLayout ? 5000 : Math.max(o.browserZoomCheckInterval, 100)
		;
    // set the timer
    setTimeout(function () {
        if (inst.destroyed || !o.resizeWithWindow) return;
        var d = $.layout.browserZoom.ratio();
        if (d !== s.browserZoom) {
            s.browserZoom = d;
            inst.resizeAll();
        }
        // set a NEW timeout
        $.layout.browserZoom._setTimer(inst);
    }
		, ms);
}

, ratio: function () {
    var w = window
		, s = screen
		, d = document
		, dE = d.documentElement || d.body
		, b = $.layout.browser
		, v = b.version
		, r, sW, cW
		;
    // we can ignore all browsers that fire window.resize event onZoom
    if ((b.msie && v > 8)
		|| !b.msie
		) return false; // don't need to track zoom

    if (s.deviceXDPI && s.systemXDPI) // syntax compiler hack
        return calc(s.deviceXDPI, s.systemXDPI);
    // everything below is just for future reference!
    if (b.webkit && (r = d.body.getBoundingClientRect))
        return calc((r.left - r.right), d.body.offsetWidth);
    if (b.webkit && (sW = w.outerWidth))
        return calc(sW, w.innerWidth);
    if ((sW = s.width) && (cW = dE.clientWidth))
        return calc(sW, cW);
    return false; // no match, so cannot - or don't need to - track zoom

    function calc(x, y) { return (parseInt(x, 10) / parseInt(y, 10) * 100).toFixed(); }
}

    };
    // add initialization method to Layout's onLoad array of functions
    $.layout.onReady.push($.layout.browserZoom._init);


})(jQuery);
